International code of botanical nomenclature : Adopted by the eleventh International Botanical Congress, Seattle, August 1969 - International Botanical Congress 1969 : Seattle, Wash.); Stafleu, Frans Antonie (Utrecht, Netherlands : A. Oosthoek, 1972)
English, French and German.
Bibliogr.: p. 394-397.
Keywords: Plants -- Nomenclature -- Congresses