01145nam a2200265Ia 450000100060000000300050000600500170001100800410002803500200006904000180008904300120010710000300011924501610014926000860031030000280039650000420042450000640046650000230053065000380055365000310059165000420062265000540066471000950071871000660081363639BIBL20160527191958.0850207s1972    pr a     b   s000 0 eng d  a(OCoLC)11669634  aUDIcUDIdm/c  anwpr---10aValle, Luis A. del2Local10aDetermination of the rate of biodegradation in some polluted tropical waters and in some types of liquid wastes common in Puerto Ricocby Luis A. del Valle.0 aMayaguez, P.R.bWater Resources Research Institute, School of Engineeringc[1972]  a80 leavesbill.c28 cm.  a"Completion report, A-023-PR"--Cover.  aPartially funded by the Office of Water Resources Research.  a"September, 1972." 0aWater supplyzPuerto Rico.2Local 0aBiodegradation.wcn2Local 0aWaterxPollutionzPuerto Rico.2Local 0aWaterxPurificationxBiological treatment.2Local20aUniversity of Puerto Rico Mayaguez Campus.bWater Resources Research Institute.wcn2Local10aUnited StatesbOffice of Water Resources Research.wcn2Local