00452nam a2200121   4500008004100000040005500041100002100096245010500117260006900222300000900291942001300300999001700313230726b        |||||||| |||| 00| 0 eng d  aNational Science LibrarycNational Science Library1 aMark, H F912823  aRecent advances in polymersc/ A course of five lectures delivered by..............25-27 April, 1962  aNew Delhi: bCouncil of Scientific & Industrial Research, c1965  a60p.  2udccREF  c55263d55263