Proceedings of the Seventh International Botanical Congress : Stockholm July 12-20 1950 /
Proceedings of the Seventh International Botanical Congress : Stockholm July 12-20 1950 /
edited for the Executive Committee by Hugo Osvald and Ewert Aberg.
- Stockholm : Almquist & Wiksell, 1953.
- 899 p. ; 26 cm.
Septième Congrés International de Botanique
Septième Congrés International de Botanique