Uchenaia Komissiia po issledovaniiu truda v Rossii. Petrogradskii Gubernskii Sovet Professional'nykh Soiuzov <br/><br/>
Arkhiv istorii truda v Rossii. Kniga pervaia.  Uchenaia Komissiia po issledovaniiu truda v Rossii. Petrogradskii Gubernskii Sovet Professional'nykh Soiuzov 
Uchenaia Komissiia po issledovaniiu truda v Rossii. Petrogradskii Gubernskii Sovet Professional'nykh Soiuzov 
 - St.Petersburg  Gosudarstvennoe Izdatel'stvo  1992 
 - frames  negative  10.5cmx15cm 
<br/><br/> Book published in 1921