Reference:Country
This page lists the country of the authors.
- Algerie - Argentina - Australia - Austria - Bangladesh - Belgium - Bolivia - Botswana - Brazil - Bulgaria - Burkina Faso - Cambodia - Cameroon - Canada - Chile - China - Colombia - Congo - Costa Rica - Czechoslovakia - Denmark - Egypt - El Salvador - Ethiopia - Finland - France - Germany - Greece - Guyana - Hungary - India - Indonesia - Iran - Iraq - Ireland - Israel - Italy - Jamaica - Japan - Jordan - Kenya - Korea - Madagascar - Malaysia - Mexico - Mongolia - Morocco - New Zealand - Nigeria - Northern Ireland - Norway - Pakistan - Panama - Papua New Guinea - Paraguay - Philippines - Poland - Portugal - Russia - Saudi Arabia - Serbia - Singapore - South Africa - Spain - Sri Lanka - Sudan - Sultanate of Oman - Sweden - Switzerland - Taiwan - Tanzania - Thailand - The Netherlands - Tunisia - Turkey - UAR - UK - USA - Uganda - Ukraine - Uruguay - Uzbekistan - Venezuela - Viet Nam - West Germany - Yugoslavia - Zimbabwe