"gates, roberts l. "
inetial-guidance systems: a programmed learning course: / roberts.l. gates - 1 ed. - uk : w foulsham 1968. - ", 171p.; 22 cm." - foulsham-sams .
572-00611-x hard cover
--
629. 132 6 gat
inetial-guidance systems: a programmed learning course: / roberts.l. gates - 1 ed. - uk : w foulsham 1968. - ", 171p.; 22 cm." - foulsham-sams .
572-00611-x hard cover
--
629. 132 6 gat