[1]
G. J. Zedan, O. N. Ali, and Z. K. Salih, “EFFECT OF ORGANIC FERTLIZER AND INTERCROPPING FOR COWPEA (Vigna sinensis) AND SWEET CORN(Zea mays var. regosa ) IN GROWTH , YIELD AND LAND EQUIVALENT RATIO ( LER )”, DASJ, vol. 2, no. 1, pp. 138–151, Jun. 2010.