"UN sales no.: 72.IX." "IAEA sales no.: STI/PUB/300/vol." "Jointly sponsored by the United Nations and the International Atomic Energy Agency." Papers in English, French, Russian, or Spanish, each with summaries in all four languages.
Bibliography, etc. Note
Includes bibliographical references.
K3989.8 .P43 1971
Vienna : United Nations International Atomic Energy Agecny, 1972.