00290nam a2200109Ia 4500008004100000082001800041100002600059245002200085260004100107300001000148650002200158140113s9999    xx            000 0 und d  a631.461  J2;1  a" Waksman, Selman A."  aSoil microbiology  b"New York : John Wiley & sons, 1952"  a356p.  aSoil microbiology