TY  - BOOK
AU  - Weih, Martin
AU  - ill.
TI  - The nitrogen economy of Mointain Birch: as related to environmental conditions and genotype
SN  - 9155441629
AV  - PAM QA76.76.W43 
CY  - Uppsala
KW  - Science and technology
N1  - Includes references
ER  -