00686nam a22001937a 450000500170000001000140001702000260003103500130005703700130007008200110008310000160009424501470011026000400025727000720029730000260036950000190039565000310041465000470044520100803104839.0  aENG-97862  a9788178311920c800.00  aEN-81395  bDBAD/PUB  a338.52  aMathur,P N   aLayers of techniques :bimplications of the co existence of different technologies for general economies and industrial firms /cby P N Mathur  aNew DelhibManak publicationsc2009  aB-7, Saraswati Complex Subhash Chowk Laxmi NagarbNew Delhie110092  axxiii,226pc24cm (Hb)  aincludes index  aPrices mathematical models  aTechnologicalj innovation economic aspects