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1
UNESCO sources book for science teaching
Gepubliceerd in 1962“…United Nations Educational, Scientific and Cultural Organisation…”
Boek -
2
Vacation study abroad.
Gepubliceerd in 1970“…United Nations Educational Scientific and Cultural Organisation…”
Boek -
3
Unesco handbook of international exchange
Gepubliceerd in 1967“…United Nations Educational, Scientific and Cultural Organisation…”
Boek -
4
Tropical forest ecosystem
Gepubliceerd in 1978“…United Nations Educational Scientific and Cultural Organisation…”
Boek -
5
Programme on man and the biosphere(MAB) Working group on Project 6: impact of human activities on mountain and tundra ecosystems
Gepubliceerd in 1974“…United nations educational scientific and cultural organisation…”
Conferentie akten Boek -
6
Programme on man and the biosphere (MAB) Task force on integrated ecological studies on human settlements, within the framework of project 11
“…United Nations Educational Scientific and Cultural Organisation…”
Conferentie akten Boek -
7
Programme on man and the biosphere(MAB) Task force on project 14: Research on environment pollution and its effects on the biosphere
Gepubliceerd in 1976“…United nations educational scientific and cultural organisation…”
Conferentie akten Boek -
8
Programme on man and the biosphere(MAB) : Regional meeting on integrated ecological research and training needs in the southern Asian mountain systems, particularly the hindu kush-...
Gepubliceerd in 1977“…United nations educational scientific and cultural organisation…”
Conferentie akten Boek -
9
Programme on man and the biosphere (MAB) : International working group on project 1 : ecological effects of increasing human activities on tropical and sub-tropical forest ecosyste...
Gepubliceerd in 1974“…United nations educational scientific and cultural organisation…”
Conferentie akten Boek
