00399nam a2200157Ia 4500003000900000008004100009040001600050080001500066100002000081245005100101250001200152260003400164300001400198650001000212650001900222IN-BaIIA211028s9999    xx            000 0 eng d  cIIA Library  a535.1bHOU  aHoustoun, R. A. 2aA treatise on lightcRobert Alexander Houstoun  a7th ed.  aLondonbLongmans, Greenc1952  axi, 528p.  aLight  aNASA Thesaurus