Copyright_1958_Boron-Fluoride-and-its-Compounds-As-Catalysts-in-Organic-Chem

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P E R G A M O N P R E S S L T D . 
4 & 5 Fitzroy Square. London, W. 1. 
PERGAMON P R E S S , I N C . 
122 E. 55th Street, New York 22, N. Y. 
P. O. Box 47715, Los Angeles, California 
P E R G A M O N P R E S S S. A. R. L. 
24 Rue des Écoles, Paris Ve. 
Copyright 
© 
1958 
Pergamon Press Ltd. 
Library of Congress Card Number 58—9821 
Published by the A cademy of Sciences of the U. S. S. R. 
(in Russian), Moscow, 1956. 
First published in English translation 1959