LeRoy, L. W. Biostratigraphy of the Maqfi section, Egypt / L. W. LeRoy. - [...?] : Geological Society of America, c 1953. - 73 p. : ill. ; 25 cm. - The geological society of America memoir, 54. . 342 342 Subjects--Topical Terms: Historical geology. Dewey Class. No.: 551.7 / L562b