Liu, L.C. et al. 1999. EFFECT OF PLANTING DATES AND FREQUENCIES OF INTERCROPPING ON YIELD AND INCOME OF BEAN AND BANANA. The Journal of Agriculture of the University of Puerto Rico. 83, 3-4 (Oct. 1999), 209–215. DOI:https://doi.org/10.46429/jaupr.v83i3-4.3891.