00483nam a22001097a 4500008004100000040005500041080002200096245016000118260006300278300001600341650001600357230807b        |||||||| |||| 00| 0 eng d  aNational Science LibrarycNational Science Library  a669.05(082.2)bK8  aAdvances in extractive metallurgyc/ Proceedings of s Symposium Organised by the Institution of Mining and Metallurgy..................17 to 20 April, 1967  aLondon: bThe Institution of Mining and Metallurgy, c1968  axiv, 1023p.  aProceedings