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- 教育 (2)
- Archaeology--Methodology (1)
- Arts and youth--Cross-cultural studies--Congresses (1)
- Clearcutting--Papua New Guinea--Madang Province (1)
- Crops and climate--Congresses (1)
- Crops--Physiology--Congresses (1)
- Education--Aims and objectives--Addresses, essays, lectures (1)
- Education--Bibliography (1)
- Educational exchanges (1)
- Estuaries--Congresses (1)
- Eutrophication--Control--Handbooks, manuals, etc (1)
- Excavations (Archaeology) (1)
- Foreign study (1)
- Foreign study--Handbooks, manuals, etc (1)
- Freshwater ecology--Congresses (1)
- Freshwater productivity--Congresses (1)
- Geography--Data processing--Congresses (1)
- Gogol Timber Project (Papua New Guinea) (1)
- Groundwater--Congresses (1)
- Hydraulics--Congresses (1)
- Information storage and retrieval systems--Geography--Congresses (1)
- International Year of the Child, 1979--Addresses, essays, lectures (1)
- Marine algae--Measurement (1)
- Plant physiology--Congresses (1)
- Primary productivity (Biology)--Measurement (1)
- Pulpwood industry--Papua New Guinea--Madang Province (1)
- Radioisotopes in Hydrology--Congresses (1)
- Radioisotopes in hydrology--Congresses (1)
- Rain forests--Papua New Guinea--Madang Province--Management (1)
- Right to education--Addresses, essays, lectures (1)
- Rivers--Congresses (1)
- Rural women--Employment--Arab countries--Case studies (1)
- Rural women--Employment--Egypt--Case studies (1)
- Rural women--Employment--Jordan--Case studies (1)
- Rural women--Employment--Sudan--Case studies (1)
- Seawater--Analysis (1)
- Semantics--Congresses (1)
- Signs and symbols--Congresses (1)
- Social sciences--Dictionaries (1)
- Social sciences--Study and teaching (1)
- Soil moisture--Congresses (1)
- Students, Foreign (1)
- UNISIST (1)
- Vegetation and climate--Congresses (1)
- Water resources development--Congresses (1)
- Women in agriculture--Egypt--Case studies (1)
- Women in agriculture--Jordan--Case studies (1)
- Women in agriculture--Sudan--Case studies (1)
- Wood chips industry--Papua New Guinea--Madang Province (1)
- 医学--衛生学.公衆衛生.予防医学 (1)
- 教育--教育史・事情 (1)
- 教育--教育課程.学習指導.教科別教育 (1)
- 水産業--水産業および漁業史・事情 (1)
- 芸術.美術--芸術史.美術史 (1)
- 農業 (1)