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Library of Congress Catalog Card Number: 53-7253 



THE ORIGINAL EDITION OK THIS BOOK 

 APPEARED AS AN ISSUE OF BIOCHIMICA KT BIOPHYSICA ACTA 



VOL. 12 NO. r/2 (1933) 



PRINTED IN THE NETHERLANDS BY 

 DRUKKKRIJ MKIJKR N.V., WORMERVEER AND AMSTERDAM 



