Abeyadeera, Nilmini Combined Mathematics - I Grade 12- Part II - Samudra Book Publisher Colombo 2014 - 439p 1 - 2023-11-27 ISBN: 978-955-680-327-3 Nat. Bib. No.: 0005992 Nat. Bib. Agency Control No.: ABE Subjects--Topical Terms: Mathematics (AL) Universal Decimal Class. No.: 510