000
00279nam a2200109Ia 4500
008
201201s9999 xx 000 0 und d
082
_a
725.21
100
_a
HELLBERG, R.
245
0
_a
THEIR DESIGN, PLANNING AND ORGANIZATION
260
_b
LONDON, B.T. BATSFORD
_c
1956
942
_c
OB
999
_c
17315
_d
17315