00381nam a22000977a 4500008004100000040005500041080001000096245008800106260006700194650002200261230403b        |||||||| |||| 00| 0 eng d  aNational Science LibrarycNational Science Library  a061.6  aNational physical laboratory Delhic/ Council of scientific and Industrial Research  aDelhi: bCouncil of scientific and Industrial Research, c1960  aInterim National