Use McQuade's Online Catalog to find books, ebooks, and DVDs.
The library uses the Library of Congress Classification system to organize books in the stacks by subject. This means that it is easy to browse the stacks once you know the subject heading and call number associated with your topic.
At McQuade, call numbers A-H are located on the 2nd floor & J-Z are located on the 3rd floor.
| Subject | Call Number |
| Geography (General) |
G1 - G922 |
| Mathematical geography. Cartography | GA1 - GA1776 |
| Physical geography | GB3 - GB5030 |
| Physical geography -- Geomorphology. Landforms. Terrain |
GB400 - GB649 |
| Physical geography -- Geomorphology. Landforms. Terrain -- Climatic geomorphology |
GB447 |
| Physical geography -- Hydrology. Water |
GB651 - GB2998 |
| Physical geography -- Natural disasters |
GB5000 - GB5030 |
| Oceanography | GC1 - GC1581 |
| Environmental sciences | GE1 - GE350 |
| Environmental sciences -- Environmental education | GE70 - GE90 |
| Environmental sciences -- Environmental policy | GE170 - GE190 |
| Environmental sciences -- Environmentalism. Green movement | GE195 - GE199 |
| Environmental sciences -- Environmental management | GE300 - GE350 |
| Human ecology. Anthropogeography | GF1 - GF900 |
| Human ecology. Anthropogeography -- Environmental influences on humans | GF51 |
| Human ecology. Anthropogeography -- Human influences on the environment | GF75 |
| Human ecology. Anthropogeography -- Settlements |
GF101 - GF127 |
| Human ecology. Anthropogeography -- By region our country |
GF500 - GF900 |
| Law in general. Comparative and uniform law. Jurisprudence -- Environmental law | K3581 - K3598 |
| Religious law in general. Comparative religious law. Jurisprudence -- Interdisciplinary discussion of subjects -- Environmental law |
KB3127 - KB3135 |
| Jewish law. Halakah -- Mishpat Ivri -- Environmental law | KBM3127 - KBM3134 |
| Islamic law. Sharī#ah. Fiqh -- Furū# al-fiqh. Substantive law. Branches of law -- Environmental law | KBP3127 - KBP3135 |
| Natural history (General) | QH1 - QH278.5 |
| Natural history (General) -- General, including nature conservation, geographical distribution | QH1 - QH199.5 |
| Biology (General) | QH301 - QH705.5 |
| Biology (General) -- Ecology | QH540 - QH549.5 |
| Botany | QK1 - QK989 |
| Zoology | QL1 - QL991 |
| Agriculture (General) | S1 - S972 |
| Agriculture (General) -- Agricultural ecology (General) |
S589.7 |
| Agriculture (General) -- Agriculture and the environment |
S589.75 - S589.76 |
| Agriculture (General) -- Agricultural conservation |
S604.5 - S604.64 |
| Agriculture (General) -- Melioration: Improvement, reclamation, fertilization, irrigation, etc., of lands |
S604.8 - S621.5 |
| Agriculture (General) -- Melioration: Improvement, reclamation, fertilization, irrigation, etc., of lands -- Organic farming. Organiculture |
S605.5 |
| Agriculture (General) -- Soil conservation and protection | S622 - S627 |
| Agriculture (General) -- Conservation of natural resources, including land conservation | S900 - S972 |
| Plant culture | SB1 - SB1110 |
| Forestry | SD1 - SD669.5 |
| Aquaculture. Fisheries. Angling | SH1 - SH691 |