prepared for the use of the Committee on Public Works, United States Senate by the Science Policy Research Division, Legislative Reference Service, Library of Congress, at the request of Hon. J. Caleb BoggsU.S. Govt. Print. Off.1970
prepared for the use of the Committee on Public Works, United States Senate by the Science Policy Research Division, Legislative Reference Service, Library of Congress, at the request of Hon. J. Caleb Boggs[Congressional Information Service][19--]
by an ad hoc committee originated by the Legislative Reference Service, Library of Congress, at the request of Hon. J. Caleb BoggsGreenwood Press[19--]