Jones, G.W. Selvaratnam, S.
Sri Lankawe Jana Sankya Vardhanaya saha Aarthika Sanvardhanaya - Colombo Marga 1974 - 214 p.
312:338.98(548.7) / J6
Sri Lankawe Jana Sankya Vardhanaya saha Aarthika Sanvardhanaya - Colombo Marga 1974 - 214 p.
312:338.98(548.7) / J6