Asimov,Issac නව පදනම Foundation - S&T Group Thalangama 2019 - 181p 1 - 2023-11-10 S.M.Bandusila ISBN: 978-95501080-39-6 Nat. Bib. No.: 0009195 Nat. Bib. Agency Control No.: ASI Universal Decimal Class. No.: 891.483