00556cam a22001811  45000010008000000030008000080050017000160080041000330400038000740820013001121000043001252450070001682600036002383000026002745040030003006500011003307000033003418002223BD-DhUL20161121090003.0720803s1965    nyu      b    000 0 eng    aDLCcBD-DhULdOCoLCdDLCdBD-DhUL  a160bHUE1 aHughes, G. E.q(George Edward),d1918-14aThe elements of formal logic /cby G.E. Hughes [and] D.G. Londey.  aNew York :bHarper & Row,c1965  axii, 403 p. ;c21 cm.  aBibliography: p. 386-388. 4aLogic.1 aLondey, D. G.ejoint author.