00444nam a22001337a 4500008004100000020001500041040005500056080002700111245006700138250001300205260004900218300001700267650002600284230628b        |||||||| |||| 00| 0 eng d  a0971460006  aNational Science LibrarycNational Science Library  aR 05(058.7)(71+73)bL7  aStandard periodical directory, 1977c/ Oxbridge Communications  a5th ed.   aNew Delhi: bOxbridge Communications, c1976  axvii, 1715p.  aAmerican periodicals