00293nam a2200109 a 450000500170000008200220001710000190003924500360005826000300009430000230012463000360014720251202164229.0  a338.90091734bMAL  aMalgavkar P.D.  aImpediments to rural technology  aDelhibOxford & IBHc1986  a155 p.c24 cm.bHB  aImpediments to rural technology