00409nam a2200121Ia 4500082002000000100006400020245008200084260003500166300001600201490006000217500000500277700000500282  a338.06bUn58.AI  aUnited Nations. Industrial Development Organisation, Vienna  aAppropriate industrial technology for agricultural machinery and implementsb  aNew YorkbUnited Nationsc1979  axiii, 159p.  aMonographs on appropriate industrial technologyv no. 4  a  a