- United States. National resources planning board. Science committee.
- United States. National Steering Committee for Management of Gypsy Moth and Eastern Defoliators
- United States. National Steering Committee for Management of Gypsy Moth and Eastern Defoliators.
- United States. National Steering Committee for Management of Gypsy Moth and Eastern Defoliators. Meeting Albuquerque, N.M.) 1992-
- United States. National Steering Committee for Management of Gypsy Moth and Eastern Defoliators. Meeting Blacksburg, Va.) 1991-
- United States. National Steering Committee for Management of Gypsy Moth and Eastern Defoliators. Meeting Salt Lake City, Utah) 1993-
- United States. National Steering Committee for Management of Western Defoliators.
- United States. National Steering Committee for Management of Western Defoliators. Meeting Albuquerque, N.M.) 1992-
- United States. National Steering Committee for Management of Western Defoliators. Meeting Spokane, Wash.) 1994-
- United States. National Steering Committee for Management of Western Defoliators. Meeting West Sacramento, Calif.) 1993-
- United States. National Technical Advisory Committee on Water Quality Criteria.
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- United States. Naval Engineering Facilities Command.
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- Universidad Nacional de La Plata.
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- Universidad Nacional de La Plata. Facultad Nacional de Agronomía y Veterinaria.
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- Universidad Nacional de México. Instituto de Geología.
- Universidad Nacional de San Agustín.
- Universidad Privada "antenor Orrego",
- Universidad Privada "antenor Orrego." Museo de Historia Natural,
- Universidade de Coimbra. Instituto Botânico.
- Universidade de Lisboa.
- Universidade de Lisboa. Jardim Botânico.
- Universidade de São Paulo Museu de Zoologia
- Universidade do Porto. Gabinete de Botânica.
- Università degli studi di Roma "La Sapienza". Dipartimento di biologia vegetale.
- Università degli studi di Sassari. Istituto di botanica.