00312nam a22001217a 4500 084937443x 631.4LAL/ME R Lal W.H.Blum C. Valentine B.A Stewart Methods for assessment of soil degradation New york CRC Press 1998 558 BBS 299854 299854 0 0 0 0 KAUCOAP KAUCOAP 2016-06-09 0 631.4LAL/ME KAU_COAP-09431 2016-06-09 00:00:00 2016-06-09 BBS