000
00290nam a2200121Ia 4500
008
170101s1972 xx 000 0 und d
082
_a
591.53 CAM
100
_a
Campbell J.W.
245
0
_a
Nitrogen Matabolism and the Environment
260
_c
1972
300
_a
318 p.
942
_2
ddc
_c
B
999
_c
461666
_d
461666