Classification
333 - Economics of land & energy
530 - Physics
000 - Computer science, information & general works
4
700 - The arts; fine & decorative arts
4
380 - Commerce, communications & transportation
1
414 - Phonology & phonetics
1
500 - Natural sciences & mathematics
1
520 - Astronomy & allied sciences
1
551 - Geology, hydrology & meteorology
1
576 - Genetics & evolution
1