Census 1961 England and wales county report :  Cambridgeshire / 

 - London :  Hermajestys stationary office,  1964. 
 - 44p. : 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Technological qualifications
<br/><br/><label>Dewey Class. No.: </label>304.6  / CEN/C