na JATIM-06090000012906 20090625111424.0 ind 0010-060900000012906 0 631.407 PUR m PURWOWIDODO 0 Metode Selidik Tanah Cet. 1 Surabaya Usaha Nasional 1992 xiv, 344 hlm. : ilus. ; 21 cm. 0 0 TANAH-PENELITIAN JIPDSUR 2 0