Stratigraphy Geology 5 India 3 Biostratigraphy 2 Petrology 2 Sedimentary rocks 2 Bangladesh 1 Burma 1 Cenozoic Era 1 Chronostratigraphy 1 Crystallography 1 Dams 1 Deltas 1 Economic Geology 1 Field geology 1 Fossils 1 General geology 1 Historical 1 Lakes 1 Landslides 1 Micro palaeontology 1 Microfossils 1 Micropalaeontology 1 Mineralogy 1 Origin of life 1 Pakistan 1 Palaeobotany 1 Palaeontology 1 Palynology 1 Physical geology 1