01280nam a2200301Ia 4500 63639 BIBL 20160527191958.0 850207s1972 pr a b s000 0 eng d (OCoLC)11669634 UDI UDI m/c nwpr--- PUXA TD225.P6 V2 Valle, Luis A. del 287044 Local Determination of the rate of biodegradation in some polluted tropical waters and in some types of liquid wastes common in Puerto Rico by Luis A. del Valle. Mayaguez, P.R. Water Resources Research Institute, School of Engineering [1972] 80 leaves ill. 28 cm. "Completion report, A-023-PR"--Cover. Partially funded by the Office of Water Resources Research. "September, 1972." Water supply Puerto Rico. 187448 Local Biodegradation. cn 202188 Local Water Pollution Puerto Rico. 187410 Local Water Purification Biological treatment. 187410 Local University of Puerto Rico Mayaguez Campus. Water Resources Research Institute. cn 183294 Local United States Office of Water Resources Research. cn 182913 Local 48998 48998 0 0 ddc 0 628_390000000000000_U58MD_1972 0 ci 162017 10 10 B 2016-05-27 1972 R.23-1 92538 0 628.39 U58(M)d 1972 80000001509689 2016-05-27 00:00:00 c.2 r:63639 z:NCC:D 6 0 0 ddc 0 628_390000000000000_U58MD_1972 0 ci 162023 10 10 B 2016-05-27 1972 R.23-1 92537 0 628.39 U58(M)d 1972 80000001509671 2016-05-27 00:00:00 r:63639 z:NCC:D 6