TY - BOOK AU - HATCH, F.H. AU - WELLS, M.K. AU - WELLS, A.K. TI - TEXTBOOK OF PETROLOGY, Volume I : PETROLOGY OF THE IGNEOUS ROCKS U1 - 552.1 PY - 1984/// CY - New Delhi PB - C.B.S. Publishers and Distrbutors, New Delhi ER -