Blyth, F. G. H., & De Freitas, M. H. (1984). A Geology for Engineers (7th ed.). E. Arnold; ELSEVIER.
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Dyfyniad Arddull Chicago
Blyth, F. G. H., and M. H. De Freitas. A Geology for Engineers. 7th ed. London ; New Delhi: E. Arnold; ELSEVIER, 1984.
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Dyfyniad MLA
Blyth, F. G. H., and M. H. De Freitas. A Geology for Engineers. 7th ed. E. Arnold; ELSEVIER, 1984.
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Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.