00290nam a22001097a 4500003000400000008004100004082001900045100001700064245003600081260005400117300000900171OSt230603b        |||||||| |||| 00| 0 eng d  a631.37bAe.308  aPoller, J.H.  aHand Book of the Engg. Sciences  aVan NostrandbSanskar's Book Agency, Delhiic1967  a1428