=LDR  00000nam a2200000ui 4500
=001  691
=008  250530s1972\\\\xx\|||||||||||||||||eng\d
=082  04$a304.2 OPE
=110  2\$aOpen University
=245  10$aChannels of synthesis: perception and diffusion
=260  \\$bOpen University Press,$c1972
=852  \\$bFreeman Library$cBooks$h304.2 OPE