nam a22 7a 4500 257626 257626 000973310 OSt 20170222083017.0 820428s1957 dcuab b f001 0 eng d (OCoLC)8376435 IAD eng IAD AGL Biblioteca Encarnacion Valdez l 19.31042-l | 19.3:1042-| Guillou, Robert B. A reconnaissance study of the beach sands of Puerto Rico / Robert B. Guillou and Jewell J. Glass Washington,[D.C.] U.S. G.P.O. 1957 iv, 273-305 pages: illustrations, map ; 24 cm + 1 folded map in case. rdacontent text text rdamedia unmediated n rdacarrier Volume nc Geological Survey bulletin ; 1042-| "Prepared in cooperation with the Economic Development Administration of the Commonwealth of Puerto Rico." Includes Bibliographical references (page 303) and index. 101964 Geology Puerto Rico fast 294023 Puerto Rico Glass, Jewell J. Economic Development Administration 182287 U.S. Geological Survey bulletin ddc 17