000
00336nam a2200109Ia 45e0
008
181001s1990 xx 000 0 und d
100
_a
Gangstad
245
0
_a
Natural resource management of water and land
260
_c
1990
300
_a
192
942
_2
ddc
_c
BK
999
_c
5426
_d
5426