Blake, L. S. 1., & Blake, L. S. (1975). Civil engineer's reference book (3rd ed., completely rev. and reset.). London: Newnes-Butterworths.
Παραπομπή Chicago StyleBlake, L. S. 1925-, and L. S. Blake. Civil Engineer's Reference Book. 3rd ed., completely rev. and reset. London: Newnes-Butterworths, 1975.
Παραπομπή MLABlake, L. S. 1925-, and L. S. Blake. Civil Engineer's Reference Book. 3rd ed., completely rev. and reset. London: Newnes-Butterworths, 1975.
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