[1]
Adsuar, J. and Pérez, J.E. 1956. CROSS-PROTECTION TESTS CONFIRM THE PRESENCE OF ETCH VIRUS ON TOBACCO IN PUERTO RICO. The Journal of Agriculture of the University of Puerto Rico. 40, 1 (Jan. 1956), 83–84. DOI:https://doi.org/10.46429/jaupr.v40i1.12665.