[1]
E. L. Sisworo, Haryanto, and A. Citraresmini, “USING THE N-15 METHOD TO DETERMINE N-SOIL, N-GREEN MANURE, AND N-UREA AVAILABILITY AFTER SIX SEASONS IN AN ALLEY CROPPING SYSTEM”, jair, vol. 2, no. 2, pp. 23–34, Sep. 2013.