00451nam a2200133Ia 4500082002100000100011300021240004500134245005500179260005100234300001600285500000500301653000600306700000500312  a333.79bSe471.TE  aSeminar on total energy and energy substitution, National Productivity Council, New Delhi, March 28-30, 1973  aNational Productivity Council, New Delhi  aTotal energy and energy substitution proceedingsb  aNew DelhibNational Productivity Councilc1976  axxii, 282p.  a  a   a