00293nam a2200121Ia 4500020001400000082002500014100001400039245006300053260003000116300001500146500000500161700000500166  a444200282  a338.163072bAr763.OA  aArnon, I.  aOrganisation and administration of agricultural researchb  aAmsterdambElsevierc1968  axii, 342p.  a  a