Faegri, K.; van der Pijl, L. 1979. The principles of pollination ecology. New York, NY: Pergamon Press. 304 p.
Faegri, K.; van der Pijl, L. 1979. The principles of pollination ecology. New York, NY: Pergamon Press. 304 p.
Western Forbs
Faegri, K.; van der Pijl, L. 1979. The principles of pollination ecology. New York, NY: Pergamon Press. 304 p.