Gurūhak-i Maʼuʼīstī-i ẓidd-i inqilābī-i Ḥizb-i Ranjbarān, dar ʻarṣah-ʼi tiʼurī va ʻamal (Cosroe Chaquèri collection of Iranian left-wing materials, 1960-1985, 1981)