Renewals are not permitted. Microforms Microfilm reels and microfiche may be checked out for copying in another library, since Chemistry does not have a copying machine. If checking out fiche, remember to take the whole envelope, not just the sheet you want. Reference and Spectra Collections Books from the Reference or Spectra Collections may be checked out for a brief period only with the specific permission of the librarian. This can be allowed if special copying is necessary, or under other unusual circumstances.
Some titles have limited circulation periods, due to their importance and frequent use.
Annual Review of Physical Chemistry, Annual Review of Biochemistry, Annual Review of Nutrition, Methoden der Organischen Chemie, Methods in Enzymology, etc. These are mostly older, ceased, or foreign-language journals, and old, infrequently used books. Turnaround time for delivery is 2 business days. Fragile items are restricted to in-library use. The Chemistry Library does not house dissertations or theses.