Youth labour

1974 - Youth labour - Youth: Elements of international youth work - 25+10 Pf. - German pfennig - Copies 4,836,000 - Policromo - Michel DE00800 - Stanley DE01696 - DE B508 - Yvert Tellier DE00649 - 4/17/1974 - comb 133⁄4 x 14 - 28 x 33 mm - Photogravure