00458nam a22001217a 4500008004100000040005500041080000900096100001900105245012900124260006000253300001000313650001300323230801b        |||||||| |||| 00| 0 eng d  aNational Science LibrarycNational Science Library  a55A   aChokkaiyan, R   aTrend report on research in non-ferrous extractive metallurgy in India c/ Indian National Scientific Documentation Centre    bIndian National Scientific Documentation Centre, c1969  a81p.   aScience