00437nam a2200121Ia 4500008004100000040001700041082002300058100002400081245007300105260003000178300001000208650009700218190328s9999||||xx |||||||||||||| ||und||  aNITILcNITIL  221sta374.1bS582Y  aSilberston, Dorothy 0aYouth in a technical ageba study of day releasecDorothy Silberston  aLondonbMax Parrishc1959  a228p.  aEducation; Education and state; Vocational guidance; Adult education; Educational technology