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GAA - Geosciences - reference books 2
GAN - Geosciences - mathematical methods, computer applications 1
GBC - Paleoclimatology 1
GBED - Glaciology 1
GBHA - Geology of coasts, geology of estuaries 1
GKAF - Geomagnetism 1
GKK - Geophysics - applications 1
GMA - Geochemistry - general 1
GNA - Geology - soil sciences 1
GPA - Geobiology - general 1
GPAC - Aquatic biology - geographical aspects 1
GRBA - Climatology - general 1
GSC - Remote sensing 1