Text ( visual ) : unmediated Contending approaches to international politics / edited by Klaus Knorr and James N. Rosenau. -- 1st Princeton paperback ed. -- paperback edn.. -- Princeton, N.J. : Princeton University Press , 1970, c1969. -- 297 p. ; 22 cm. -- (Princeton paperbacks ; 213). -- Written under the auspices of the Center of International Studies ; Includes bibliographical references and index. -- ISBN 0691021643 ; (BA1294909X) ; https://ci.nii.ac.jp/ncid/BA1294909X Author Heading(s): Knorr, Klaus Eugen ; Rosenau, James N. ; Woodrow Wilson School of Public and International Affairs. Center of International Studies. -- Classification(s): LCC : JX1291 ; DC : 327. -- Subject Heading(s): LCSH : International relations -- Study and teaching