ලෝක ජන සංඛාවේ වර්ධනය,ඒ ආශ්රිත ගැටළු හා ශ්රී ලංකාව
Language: Sinhala Language Series: විද්යා අධ්යාපන පෙළ අංක 35Publication details: Colombo Sri Lanka swabawika sampath,balasakthi ha widdya adikariyaDescription: Illustration 22 cm. 42 pSubject(s): DDC classification:- 304.62 RAT
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