International Catalogue of Scientific Literature, 

 (H) GEOLOGY. 



0000 Philosophy. 



0010 History. Bioyraphy. 



0020 Periodicals. Reports of Institutions, Societies, 

 Congresses, etc. 



0030 General Treatises, Text Books, Dictionaries, Biblio- 

 graphies, Tables. 



0040 Addresses, Lectures. 



0050 Pedagogy. 



0060 Institutions, Museums, Collections, Economics. 



0070 Nomenclature. 



PHYSICAL. 



10 General. 



15 Glacial Geology. 



20 Volcanic Geolog}'. 



^q) Seismic Geology (including elevation and depression). 



TECTONIC. 



2S Denudation, sedimentation, and deposition. {See also 



pOy Stratification and field (structural) features of rocks 

 ^^ (including outcrops, dips, strikes, lamination, folds, 



dislocations, faults, jointing, and cleavage). 

 32 Orogeny. 



(h-1542) 15 



