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Abrams, R. and Juliá, F.J. 1973. Effect of Planting Time, Plant Population and Row Spacing on Yield and Other Characteristics of Pigeonpeas, Cajanus cajan (L.) Millsp. The Journal of Agriculture of the University of Puerto Rico. 57, 4 (Oct. 1973), 275–285. DOI:https://doi.org/10.46429/jaupr.v57i4.10725.