Blackledge, G. F. (1973). The concrete cube test (2nd ed.). London: Cement and Concrete Association.
Παραπομπή Chicago StyleBlackledge, G. F. The Concrete Cube Test. 2nd ed. London: Cement and Concrete Association, 1973.
Παραπομπή MLABlackledge, G. F. The Concrete Cube Test. 2nd ed. London: Cement and Concrete Association, 1973.
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