Workers Library Publisher Ed. ,// 23 p.

International Publishers Ed. ,// 35 p.

International Publishers Ed. ,// 23 p.

International Publishers Ed. ,// 31 p.

International Publishers Ed. ,// 31 p.

Labor Unity Publishers Ed. ,// 32 p.

Pionner Publishers Ed. ,// 48 p.

Workers Library Publishers Ed.

SEEDS Ed. ,// 16 p.

BLI -Brazil Labor Information and Resource Center Ed. ,// 12 p.