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APL B 129.798 'Iv' 

A-P-L-CongresB seventythree.-APL Congress 73. 
Proceedings of the APL Congress 73. Copenhagen, 
Denmark, August 22-24, 1973. Ed. by

P. Gjerl~v. H.J.Helms and Johs Nielsen. 
[Mit Tab •• Fig. u. Diagr.J-Amsterdam [usw.J 
North-Hollang Publ. Company [usw.J 1973. 
XV, 506 S. 8