na INLIS000000000000893 0010-0124000579 Konservasi tanah dan air Sitanala Arsyad ARSYAD, Sitanala Institut Pertanian Bogor Press Cet. 3 Bogor Institut Pertanian Bogor Press 2000 xxvi, 290 p. : ills. ; 24 cm. 979-493-003-2 631.6 ARS k SOIL CONSERVATION WATER CONSERVATION TANAH AIR KONSERVASI. 122/2001