Geology of the country around plonnaruwa
Vitanage, Piyadasa W
Geology of the country around plonnaruwa - Colombo: Department of Mineralogy, 1959 - ix, 75p. - Memoir no. 1 .
553(548.7) / J9
Geology of the country around plonnaruwa - Colombo: Department of Mineralogy, 1959 - ix, 75p. - Memoir no. 1 .
553(548.7) / J9