00486nam a2200121Ia 4500008004100000040001700041082002200058110006500080245008300145260005500228300001000283650007100293190327s9999||||xx |||||||||||||| ||und||  aNITILcNITIL  221sta632.1bI39S  aIndia. Planning Commission. Programme Evaluation Organisatio 0aStudy of the extension of plant protection measures in agricultural production  aNew DelhibProgramme Evaluation Organisationc1968  a157p.  aPlants, Protection of; Agriculture-Research; Agriculture and state