00731nam a2200253 a 4500 50008 BD-RjUL 20211209075438.0 160823s1972 fr b i001 0 eng (BD-RjUL)50128 BD-RjUL DLC BD-RjUL eng eng 658.31243 23 GRT 1972 Gretler, Armin. 149852 The training of adult middle-level personnel / Paris : Unesco, 1972. 164 p. ; 24 cm. $4.00 (U.S.) Includes Bibliography: p. 145-159. and Index Occupational training. 149853 Supervisors. 149854 Industrial technicians. 149855 ddc BK 50008 50008 0 0 ddc 0 0 NFIC RUCL RUCL Stack 1982-06-05 Unisco 0 658.31243 GRT 1972 2016-08-23 00:00:00 C-2 2016-08-23 BK