APA

Valle L. A. d., University of Puerto Rico Mayaguez Campus & United States. (1972). Determination of the rate of biodegradation in some polluted tropical waters and in some types of liquid wastes common in Puerto Rico. Mayaguez, P.R: Water Resources Research Institute, School of Engineering.

Chicago

Valle Luis A del, University of Puerto Rico Mayaguez Campus and United States. 1972. Determination of the rate of biodegradation in some polluted tropical waters and in some types of liquid wastes common in Puerto Rico. Mayaguez, P.R: Water Resources Research Institute, School of Engineering.

Harvard

Valle L. A. d., University of Puerto Rico Mayaguez Campus and United States. (1972). Determination of the rate of biodegradation in some polluted tropical waters and in some types of liquid wastes common in Puerto Rico. Mayaguez, P.R: Water Resources Research Institute, School of Engineering.

MLA

Valle Luis A del, University of Puerto Rico Mayaguez Campus and United States. Determination of the rate of biodegradation in some polluted tropical waters and in some types of liquid wastes common in Puerto Rico. Mayaguez, P.R: Water Resources Research Institute, School of Engineering. 1972.