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Rajarman S, . (1965). Geology for Engineers. Trivandrum: St.Josheph.Trivandrum.
Rajarman S, . 1965. Geology for Engineers. Trivandrum: St.Josheph.Trivandrum.
Rajarman S, . Geology for Engineers. Trivandrum: St.Josheph.Trivandrum. 1965.