Landrau, Jr., P. and Samuels, G. 1954. RESPONSE OF FOUR SUGARCANE VARIETIES TO FERTILIZERS DURING THE FIRST ISABELA CYCLE, 1946-51. The Journal of Agriculture of the University of Puerto Rico. 38, 2 (Apr. 1954), 73–95. DOI:https://doi.org/10.46429/jaupr.v38i2.12709.