00402nam a22000857a 4500008004100000040005500041245014600096260006500242300000900307230717b        |||||||| |||| 00| 0 eng d  aNational Science LibrarycNational Science Library  aMicrofiche, microfilm and related equipment: bA DDC bibliographyc/ Defense Documentation Center Alxendria, Virginia April 1968 - April 1971  aWashington: bNational Technical Information Service, c1971  a47p.