The effect of NPK Compound (6:16:7) on Chemical Soil Properties of Thapic Epiaquands and Cucumber Yield - Sukristiyonubowo, .; Balai Penelitian Tanah, Puslitbang Tanah dan Agroklimat, Jl. Ir. H. Juanda 98, Bogor 16123 (UNIVERSITY OF LAMPUNG, 2009)