QA - Mathematics 139,748
QC - Physics 51,714
QH - Natural History and Biology 35,826
Q - General Science 33,654
QD - Chemistry 29,135
QP - Physiology 28,235
QE - Geology 26,282
QL - Zoology 23,385
QB - Astronomy 13,647
QK - Botany 12,528
QR - Microbiology 8,723
QM - Human Anatomy 1,687
B - Philosophy 3