na INLIS000000000001123 Ind 0010-1118001123 Praktikum teknik konservasi tanah dan air HARTATIK, Ratna Sri oleh Ratna Sri Hartatik Bogor Fak. Pertanian IPB 2005 36 p. : ill.; 30 cm. 36 p. : ill.; 30 cm. 631.459:631.61HARp 631.459:631.61 SOIL CONSERVATION WATER CONSERVATION 144/D/2008-mfn1926 144/D/2008-mfn1927 144/D/2008-mfn46419