Allenspach, Heinz <br/><br/>
Flexible working hours / 
Heinz Allenspach 
 - Geneva  International Labour Office  1975 
 - 64p.  26cm 
<br/><br/><label>ISBN: </label>9221011984 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Hours of labor