| Laboratory Guide to Pathogens and Parasites | Poiner, George O., Jr.;Thomas, Gerard M. |
| Land, The Yearbook of Agriculture 1958 | U.S. Department of Agriculture |
| Landscape for Living, The Yearbook of Agriculture 1972 | U.S. Department of Agriculture |
| Landscaping for Desert Wildlife: Trees & Shrubs, Cactus & Succulents, Flowers & Grasses | Engel-Wilson, Carolyn |
| Larousse Guide to Spiders | Jones, Dick |
| Larvae of Insects | Peterson, Alvah |
| Leafhopper Vecotrs of Phytopathogenic Viruses (Homoptera Cicadellidae)Taxonomy, Biology and Virus Transmission |
Nielson, M. W. |
| Leafhopper Vectors of Phytopathogenic Viruses (Homoptera Cicadellidae)Taxonomy, Biology, and Virus Transmission |
Nielson, M. W. |
| Lectures in Biostatistics | Williams, Brian |
| Leeches (Annelida: Hirudinea) of North America | Klem, Donald J. |
| Lepidoptera de Oaxaca 1 : Distribucion y Fenologia de los Papilionoidea de la Sierra de Jaurez | Martinez, Moises Armando Luis, et al |
| Lepidopterofauna de Guerrero I: Distribucion y Fenologia de los Papilionoidea de La Sierra de Atoyac | Fernandez, Isabel Vargas; Bousquets, Jorge E. Llorente; Martinez, Moises Armando Luis |
| Lepidopterofauna de Guerrero I: Distribucion y Fenologia de Los Papilonoidea de La Sierra de Atoyac | Fernandez, Isabel Vargas; Bousquets, Jorge E. Llorente; Martinez, Moises Armando Luis |
| Life and Death of the Salt Marsh | Teal, John & Mildred |
| Life of the Bee, The | Maeterlinck, Maurice; Tr. by Sutro, Alfred |
| Life of the Fly | Fabre, J. Henri |
| Life of the Spider | Crompton, John |
| Life of the Spider, The | Fabre, J. Henri |
| Life of White Ant, The | Maeterlinck, Maurice |
| List of Terrestrial Invertebrates of Conservation Concern | Spevak, Edward M. |
| Listening to Nature: How to Deepen Your Awareness of Nature | Cornell, Joseph |
| Little Things That Run The World , The | Terrestrial Invertebrate Taxon Advisory Group |
| Livebearing Aquarium Fishes | Jacobs,Kurt |
| Living Insects of the World | Klots, Alexander B. & Elsie B. |
| Living River, The | Seymour, Peter (Editor) |
| Look at America | Look Magazine |
| Love-Life of Animals | Buddenbrock, Wolfgang von; Tr. by Chaplin, J. M. |
| Mammals, A Golden Guide | Zim, Herbert S., Ph.D.; Hoffmeister, Donald F., Ph.D. |
| Man Eating Bugs; The Art and Science of Eating Insects | Menzel, Peter;D'Alusio, Faith |
| Man Who Walked Through Time, The | Fletcher, Colin |
| Management and Welfare of Invertebrates in Captivity: Proceedings... | Collins, N.M. |
| Managing a Zoo Library in the 90's | Coates, Linda |
| Manual of Common Beetles of Eastern North America | Dillon, Elizabeth S; Dillon, Lawrence S. |
| Manual of the Grasshopper of New Mexico, A; Handbook 7;Orthoptera:Acrididae and Romaleidae | Richman, D.B.; Lighfoot, D.C.; Sutherland, C.A. |
| Manual of the Grasshoppers of New Mexico, A | Richman, D.B.; Lighfoot, D.C.; Sutherland, C.A. |
| Manual of Vegetable Garden Insects | Crosby, Cyrus R.; Leonard, Mortimer D. |
| Mariposas de Chiapas | De La Maza, Roberta G. and Javier de La Maza |
| Mariposas Mexicanas: Guia Para Su Colecta y Determinacion | Ramirez, Roberto De La Maza |
| Mating Systems and Pollination Biology of Velvet Mesquite (Ptosopsis Velutina Wooten) | Keys, Roy Nelson |
| Medical and Dietary Uses of Honey | Shipman, Barbara A. |
| Medicine for the Outdoors | Auerbach, Paul S. , M.D. |
| Meloidae of Arizona: Technical Bulletin 175 | Werner, Floyd G; Enns, Wilbur R.;Parker, Frank H. |
| Men and Snakes | Morris, Ramona & Desmond |
| Methods and Principles of Systematic Zoology | Mayr, Ernst; Linsley, E. Gorton; Usinger, Robert L. |
| Methods for Ecological Bioenergetics | Grodzinski, W.;Klekowski, R.K.;Duncan, A. |
| Methods for Ecological Biogenetics | Grodzinski, W.;Klekowski, R.K.;Duncan, A. |
| Mexican Masks | Cordry, Donald |
| Mexican Masks From the Cordry Collection | Griffith, James S. |
| Mimicry in Plants and Animals | Wickler, Wolfgang; Martin, R.D. (trans.) |
| Miocene Arthropods from the Mojave Desert California | Palmer, Allison R.; |
| Monarch of Deadman Bay, The Life & Death of a Kodiak Bear | Caras, Roger A. |
| Monkey Wrench Gang, The | Abbey, Edward |
| Mosquito Atlas, Part I | Ross, Edward S. and Roberts, H. Radclyffe |
| Mosquito Atlas, Part II | Ross, Edward S. and Roberts, H. Rayclyffe |
| Mosquito, The | Gillet, J.D. |
| Mosquitos of New Jersey and their Control, The | Headlee, Thomas J. |
| Mosquitos of the United States #2 | |
| Moth Book, The | Holland, W. J. |
| Moths of America North of Mexico... 8 volumes | Hodges, RonaldW.;Munroe, Eugene; Ferguson, Douglas C. |
| Moths of America North of Mexico: Pyraloidia: Pyralidae 13 1C | Munroe, Eugene |
| Moths of America North of Mexico: Pyraloidia: Pyralidae 13 2C | Munroe, Eugene |
| Moths of America North of Mexico: Bombycoidea Saturniidae (Part) | Ferguson, Douglas C. |
| Moths of America North of Mexico: Bombycoidea Saturniidae (Part) | Ferguson, Douglas C. |
| Moths of America North of Mexico: Mimallonoidea & Bombycoidea | Franclemont, John G. |
| Moths of America North of Mexico: Pyraloidea | Munroe, Eugene |
| Moths of America North of Mexico: Pyraloidea Pyralidae (Part) |
Munroe, Eugene |
| Moths of America North of Mexico: Pyraloidea Pyraloidea (Part) |
Munroe, Eugene |
| Moths of America North of Mexico: Sphingoidea | Hodges, Ronald W. |
| Moths of America North of Mexico; Gelechioidea | Hodges, Ronald W. |
| Moths of America North of Mexico; Pyraloidea Pyralidae (Part) | Munroe, Eugene |
| Multiple Intelligences in the Classroom | Armstrong,Thomas |
| Museums for a New Century | American Association of Museums |