RADIOISOTOPES IN BIOLOGY AND AGRICULTURE 



Copyright © 1955 by the McGraw-Hill Book Company, Inc. Printed in the 

 United States of America. All rights reserved. This book, or parts thereof, 

 may not be reproduced in any form without permission of the publishers. 



Library of Congress Catalog Card Number 54-11261 



THE MAPLE PRESS COMPANY, YORK, PA. 



