00270nam a2200085Ia 4500008004100000082002800041245005100069260004200120650002200162220204s9999    xx            000 0 und d  a631.461:631.811.91bSOI 0aWater potential relations in soil microbiology  aMadisonbSoil Sc soc of Americac1985  aSoil microbiology