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Determination of Radium-228 in Natural Waters
GEOLOGICAL SURVEY WATER-SUPPLY PAPER 1696-G Determination of Radium-228 in Natural Waters
By JESSE O. JOHNSON
RADIOCHEMICAL ANALYSIS OF WATER
GEOLOGICAL SURVEY WATER-SUPPLY PAPER 1696-G
UNITED STATES GOVERNMENT PRINTING OFFICE, WASHINGTON : 1971 UNITED STATES DEPARTMENT OF THE INTERIOR
ROGERS C. B. MORTON, Secretary
GEOLOGICAL SURVEY
William T. Pecora, Director
Library of Congress catalog-card No. 72-610150
For sale by the Superintendent of Documents, U.S. Government Printing Office' Washington, D.C. 2O4O2 Price 25 cents (paper cover) CONTENTS