00314nam a2200097Ia 4500008004100000082001900041100002200060245006200082260006500144300000700209140113s9999    xx            000 0 und d  a581(082.1)   L  a"Henderson, A.J."  aBetter farming series -1 The way to work-the living plant  a1970bFood & Agric. Organisation of the United NationscRome  a27