Perera,V.

ආපදා හා ආපදා කළමනාකරණය Sin Sin Apada saha apada kalamnaranaya Sin Perera,V. - Colombo: S.Godage, 2021. - 423p.: ill.,Photographs,Tables,; 21cm.

9789553049391

363.34 / පෙරේරා

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