by Royal Belgian Academies of Science.
by UNIDO Vlenna.
by Greenway, F.
by Carnegie Cossission on Science, Technology, and Government.
by COSTED | ICSU.
by Upreti, B.C.
by International Council of Scientific Unions.
by International Union of Geodesy and Geophysics.
by Senanayake, R.
by USAID.
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