TY  - BOOK
AU  - Gundersen,Alfred
TI  - Plant families: a plea for an international sequence 
T2  - Contributions (Brooklyn Botanic Garden)
PY  - 1920///
KW  - Plants
KW  - Classification
N1  - Reprinted from: New phytologist, vol. 19, 1920, pp. 264-271
ER  -