000 00312nam a2200121Ia 4500
008 240227s9999 xx 000 0 und d
041 _a Sinhala
245 0 _aඉගෙනුම් උදව්
300 _a26p.;
_bill.;
_c29cm
650 _aEnvironmental Studies
658 _aDistance Education
942 _cMD
999 _c97882
_d97882