Blyth FGH, de Freitas MH, . (1985). Geology for Engineers. London: ELBS/Edward Arnold.
Blyth FGH, de Freitas MH, . 1985. Geology for Engineers. London: ELBS/Edward Arnold.
Blyth FGH, de Freitas MH, . Geology for Engineers. London: ELBS/Edward Arnold. 1985.