The Georgian Academy of Sciences has departments of mathematics and physics, earth sciences, applied mechanics, machine building, and control processes, chemistry and chemical technology, agricultural science problems, biology, and physiology and experimental medicine. Georgia has 44 research institutes, many attached to the academy, conducting research concerning agriculture, fisheries, and veterinary science; and medicine, natural sciences, and technology. The academy's Sukhumi Botanical Garden is maintained at Chavchavadze. The Scientific and Technical Library of Georgia, with more than 10 million volumes in 1996, is located in T'bilisi. Eight colleges and universities offer degrees in basic and applied sciences. In 1987–97, science and engineering students accounted for 39% of university enrollment.