This bibliography, originally published in 1977, details original material on international relations since 1870 written in English and appearing in non-recurrent multi-author works published between 1945 and 1975. The authors have distinguished between core topics such as foreign policy, defence, and international organisation, and peripheral areas such as interntional economics, international law and diplomatic history. Essays have been selected which make an enduring and substantial contribution to the study of IR. .