Frings, Anja. Join us in a participatory approach to training, learning & production : a practical guide to the action training model/ Anja Frings et al. - Bonn : DSE, 1993. - x, 145 p. : Ill. ; 30 cm. ISBN: 3924441634 Subjects--Topical Terms: Adult education. Vocational Training. LC Class. No.: LB1131 / JOI 1993