[1]
Krishna Prasad Paudel, Sutevee Sukprakarn, Krung Sidathani, and Yongyut Osotsapar, “Effects of Organic Manures on Production of Lettuce (Lactuca sativa L.) in Reference to Chemical Fertilizer”, Agr. Nat. Resour., vol. 38, no. 1, pp. 31–37, Feb. 2004.