00290nam a2200109Ia 450000500170000000800410001708200140005810000170007224500380008926000450012730000080017220260225050956.0260224s9999||||xx |||||||||||||| ||und||  a631.4 RUS  aE.W. Rusell  0aSoil conditions and plant growth   aThe English Language Book Society c1973  a849