IAHR Seventh General Meeting Transactions 

 - IAHR with Financial assistance of UNESCO  LISBOA- Portugal  1957 
 -  ILL.,Cht.,Fig and Table 
 - Volume  2 .
<br/><br/><label>Nat. Bib. No.: </label>1804 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Engineering
<br/><br/><label>Universal Decimal Class. No.: </label>626.01  / IAH