00333cam a22001097a 4500008004000000082001200040245007800052260004700130300001000177650001500187700002100202180718b1962   xxu||||| |||| 00| 0 eng d  aK95 G12  aPsychological principles in system developmentcedited by Robert M. Gagne  aNew YorkbHolt, Rinehart and Winstonc1962  a560p.  aPsychology  aGagne, Robert M.