The International collaborative study on the first proposed international standard of birch (betula verrucosa pollen extract / by F. C. Arntzen ... [et al.]
No Electronic Version
Citation
Arntzen, F. C, Wilhelmsen, T. W, Lowenstein, Henning, Gjesing, B, Maasch, H. J. et al. (1986). The International collaborative study on the first proposed international standard of birch (betula verrucosa pollen extract / by F. C. Arntzen ... [et al.]. World Health Organization. https://iris.who.int/handle/10665/61961
Description
PC.HQWHO/BS/86.1512. Unpublished
43 p.