The International Workshop on Environmental Education, Belgrade, Yugoslavia, 13-22 October 1975
著者
書誌事項
The International Workshop on Environmental Education, Belgrade, Yugoslavia, 13-22 October 1975
（Rapport final）
Unesco, 1977
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注記
At head of title: International Environmental Education Programme-Unesco-UNEP
"ED-76/WS/95"
"Paris, 1 February 1977"--P. [2] of cover