Books on chemical and biochemical subjects in Middlebury College Libraries are assigned Library of Congress classification numbers that group them together by their major subjects. Pure chemistry and biochemistry books are classified in QD and QP, respectively, and chemical engineering materials are classed in TP. Other applied areas are classified with the subjects they complement: atmospheric chemistry (QC), geochemistry (QE), natural water chemistry (GB) and water pollution (TD). Spectroscopy materials are classed in the QC400 range. Books on a particular subject can be identified in MIDCAT by doing any one of three different types of searches. Subject heading searches yield up materials by their major focus. Call number searches, such as qd155, are equally powerful, but click first on the "Other Searches..." button, then on the "Call Number" button. Keyword searches are useful in fields where subject headings have not caught up with the current terminology, but keyword searches can retrieve material unrelated to your interests.
Students, faculty and staff who cannot locate a desired book in the Middlebury College Libraries can borrow most books through Interlibrary Loan.