M Natural History {Mineralogy, Botany, Zoology} in general. Microscopy(MB), Geology, Biology (MWW)
Geology (MC) has
– Physical Geography
– Meteorology
– Paleontology
MA Museums of Natural History
MD Mineralogy
ME Crystallography
MF Lithology
MG Physiography, Physical Geography
MH Aerology, Meteorology incl. Aerelectrics, Climate
MJ Hydrology
MK Geology of the Surface
ML Geology of the Interior
MM Petrographic Geology
MN Structural Geology
MP Economic Geology
MQ Paleontology
MY Near Earth
MZ Planetary Science of the Solar System (LV) and Exoplanets (LT)
B615 | MV | Biology
SA194 | MV | Sand Dollar
Environmental Science and Ecology: