When Working in Wells and tunnels, Follow work Safety Rules
1980s
Ref. # 552-037
lithograph
35x50 cm
1980s
lithograph
35x50 cm
Work safety poster
Ref. # 552-037
1980s
Ref. # 552-037
lithograph
35x50 cm
1980s
lithograph
35x50 cm
Work safety poster
Ref. # 552-037