Symbols and abbreviations for use in geological maps,sections and subsurface exploratory logs
Indian Standards Institution
Symbols and abbreviations for use in geological maps,sections and subsurface exploratory logs - New Delhi 1975 - pt.2 - IS : 7422pt.1--1974 .
ROCKS,IGNEOUS -- ABBREVIATIONS
ROCKS,IGNEOUS -- ABBREVIATIONS
389.6 IS : 7422
Symbols and abbreviations for use in geological maps,sections and subsurface exploratory logs - New Delhi 1975 - pt.2 - IS : 7422pt.1--1974 .
ROCKS,IGNEOUS -- ABBREVIATIONS
ROCKS,IGNEOUS -- ABBREVIATIONS
389.6 IS : 7422