00277nam a2200097Ia 4500008004100000082001900041100002200060245006000082260003000142300000700172140113s9999    xx            000 0 und d  a631(082.1)   L  a"Herderson, A.J."  a"Better Farming series - 8 the soil,  the living soil "  a1970bFAOcUnited Nations  a24