From Foreword: In the fall of 1949 the chairman of the joint committee directed the committee staff to study the hydrogen bomb in relation to international control of atomic energy. It is hoped that the following pages, prepared by the staff at the chairman's request, will assist the joint committee in considering this problem. All statements have been meticulously screened so as to include unclassified and publishab le information only.

At head of title: 81st Cong., 2d sess. Joint committee print.