Erdman, Michael D. Biogas potential in the Republic of Panama Michael D. Erdman. - [San Juan] Center for Energy and Environment Research, University of Puerto Rico, U.S. Dept. of Energy [1981?] - ii, 49 leaves 28 cm. "CEER-X-113"--Cover. Bibliography: leaves 32-33. LCCN: 82622767 //r89 Subjects--Topical Terms: Biogas--Panama. LC Class. No.: TP359.B48 / E73 1981 Dewey Class. No.: 338.4/7665776/097287