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An introduction to the Geology of Sri Lanka (Ceylon)

By Cooray, P. G. . Sri Lanka National Museums of Sri Lanka Publication 1984 . xxvii, 339p. , 24cm x 17cm .

Colombo Geological Survey & Mines Bureau . xi, 138p. 24cm x 17cm . 9559323040

Colombo Geological Survey Department 1965 . xi, 111, [11]p. 24cm x 18cm .

Colombo Geological Survey and Mines Bureau 1995 . ix, 52p. 20 cm x 30 cm . 9559323024