hatherton, T.
Gravity map of Sri lanka / T.hatherton, D.B.pattiaratchi and V.V.C.ranasinge - Colombo Geological survey department 1975 - 38 p. - professional paper no.3 .
910.11 / HAT
Gravity map of Sri lanka / T.hatherton, D.B.pattiaratchi and V.V.C.ranasinge - Colombo Geological survey department 1975 - 38 p. - professional paper no.3 .
910.11 / HAT