00656nam a22002057a 4500 Geological Survey (U.S.) 227708 257593 257593 000771505 OSt 20200624062631.0 101221s1992 dcu f000 0 eng d GPO GPO Biblioteca Encarnación Valdes I 19.2:M 66/12 I 19.2:M 66/12 Mineral Resources of Puerto Rico a mew [sic] Island-Wide Assessment, June 23-25,1992: a public meeting on mineral resource assessment. Washington 1992 1 v. Puerto Rico ddc 17 I 19.2: M 66/12 0 0 0 ddc 0 0 10 10 5 2017-02-17 0 I 19.2:M 66/12 I 19.2:M 66/12 2017-02-17 00:00:00 2017-02-17 17