Gretler, Armin.
The training of adult middle-level personnel / Armin Gretler. - Paris : Unesco, 1972. - 164 p. ; 25 cm.
Includes index
Bibliography : p. 145-159.
392 392
Occupational training.
374 / U2t
The training of adult middle-level personnel / Armin Gretler. - Paris : Unesco, 1972. - 164 p. ; 25 cm.
Includes index
Bibliography : p. 145-159.
392 392
Occupational training.
374 / U2t