Gilbert, C.M/Turner, F.J/ Williams, H Petrography: An introduction to the study of rocks in thin sections Howel Williams/ Francis J. Turner and Charles M. Gilbert - San Francisco W.H Freeman 1954 - vii, 406p, ill, Hbk ISBN: 716702061 Subjects--Topical Terms: Rocks LC Class. No.: QE 431 / .W5 1954