TY - BOOK ED - India. Geological Survey TI - Precambrian geology of the peninsular shield U1 - 551.71(54) PY - 1975/// CY - Calcutta PB - India, GS KW - Precambrian geology KW - Stratigraphy N1 - Collection papers presented at the seminar held on 29th, 30th & 31st Oct, 1971 at Calcutta ER -