Snyder, V. A. and Vázquez, M. A. (2021) “COMPARISON OF THE CASAGRANDE AND DROP-CONE PENETROMETER METHODS FOR MEASURING THE LIQUID LIMIT IN PUERTO RICAN SOILS”, The Journal of Agriculture of the University of Puerto Rico, 105(2), pp. 263–268. doi: 10.46429/jaupr.v105i2.20086.