Riollano, A. 1942. THE VALUE OF FILTER PRESS CAKE AS A FERTILIZER FOR VEGETABLE CROPS. PRELIMINARY TRIALS WITH TOMATOES AND CUCUMBERS. The Journal of Agriculture of the University of Puerto Rico. 26, 4 (Oct. 1942), 99–104. DOI:https://doi.org/10.46429/jaupr.v26i4.13589.