Rigby J K Ed. Proceeding on recognition of ancient sedimentary environment - Tulsa Soc. of Economic Paleontologists and Mineralogists 1972 - vii, 340p. cm. - Society of Economic Paleontologists and mineralogists, special publications; 16 . Standard No.: 47301 Source: Textual Subjects--Topical Terms: MetamorphismGeology Dewey Class. No.: H23p73,N69, L2