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A U T O M A T I C C O N T R O L
PROCEEDING S O F TH E I & M SPECIA L SECTIO N O N A U T O M A T I C C O N T R O L (I & M A C )
September 17—18, 1964, Stockholm, Sweden
Editors: Birger Qvarnstrôm, Torgny Schutt and Vera Runnsrrom-Reio
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ACADEMIC PRESS NEW YORK/LONDON