000
00268nam a2200109Ia 4500
008
200302s9999 xx 000 0 und d
100
_a
G. F. Blackledge
245
_a
The Concrete Cube Test
260
_b
Cement and Concrete Association
260
_c
1973
300
_a
11 P.,
999
_c
468
_d
468