00449nam a2200133Ia 4500008004100000082001400041100002500055245009500080260004400175300000800219650004100227650003400268653001300302170901s1979    xx            000 0 und d  a631bL12F  aLahiri, Ranjan Kumar 0aFamily Farming in A Developing EconomybA Study based on Farm Management Survey of Tripura  aNew DelhibConcept Publishing Co.c1979  a132  aAgriculture and related technologies  aTechnology (Applied sciences)  aAgronomy