000
00251nam a2200109Ia 4500
008
140122s9999 xx 000 0 und d
082
_a
660 Beckman W
100
_a
Beckman W A
245
_a
Solar heating design
260
_b
_c
1977
942
_c
BK
_2
ddc
999
_c
3153
_d
3153