Faegri, Knut.
The principles of pollination ecology / by K. Faegri and L. van der Pijl. - 3rd rev. ed. - Oxford : Pergamon Press, c1979. - xi, 244 p. : ill. - Pergamon international library of science, technology, engineering, and social studies .
0080213383
Pollination.
Plant ecology
The principles of pollination ecology / by K. Faegri and L. van der Pijl. - 3rd rev. ed. - Oxford : Pergamon Press, c1979. - xi, 244 p. : ill. - Pergamon international library of science, technology, engineering, and social studies .
0080213383
Pollination.
Plant ecology