00309nam a2200109Ia 4500008004100000040003800041100001600079245003800095260003100133300001900164653001600183211214s9999    xx            000 0 und d  cJayakar Knowledge Resource Centre  aHudson, J P 0aControl of the plant environment.  bBUTTER WORTHaLONDONc1957  aVIII, 236 p p.  aAGRICULTURE