TY  - BOOK
AU  - Tamm,Carl Olof
TI  - Nitrogen in terrestrial ecosystems : questions of productivity,vegetational changes,and ecosystem stability / 
T2  - Ecological studies no;81, 
SN  - 354051807X
U1  - 577.3145 
PY  - 1991///
CY  - Berlin : 
PB  - Springer-Verlag , 
KW  - FOREST ECOLOGY
N1  - NULL
ER  -