Official publication of Scientists' Institute for Public Information, 1969- ; vols. for 1969- published by the Committee for Environmental Information in cooperation with the Scientists' Institute for Public Information; <, Oct. 1979-> by the Helen Dwight Reid Educational Foundation in cooperation with the Scientists' Institute for Public Information.
Indexes
Vols. 1-14, 1958-72. 1 v. (Includes index to the journal under its earlier titles)