Descubre y comparte nuestro conocimiento público

Arntzen, F. C ,  Wilhelmsen, T. W ,  Lowenstein, Henning ,  Gjesing, B ,  Maasch, H. J ,  Strömberg, R ,  Einarsson, R ,  Backman, A ,  Mäkinen-Kiljunen, S ,  Ford, Annette ,  World Health Organization. Biologicals Unit ,  WHO Expert Committee on Biological Standardization (1986 : Geneva, Switzerland) ,  [The International collaborative study on the first proposed international standard of birch (betula verrucosa pollen extract / by F. C. Arntzen ... [et al.]]

Arntzen, F. C ,  Wilhelmsen, T. W ,  Lowenstein, Henning ,  Gjesing, B ,  Maasch, H. J ,  Strömberg, R ,  Einarsson, R ,  Backman, A ,  Mäkinen-Kiljunen, S ,  Ford, Annette ,  World Health Organization. Biologicals Unit ,  WHO Expert Committee on Biological Standardization (1986 : Geneva, Switzerland) ,  [The International collaborative study on the first proposed international standard of birch (betula verrucosa pollen extract / by F. C. Arntzen ... [et al.]]