කාර්යක්ෂමතා සංවර්ධනය සඳහා ගුරු සේවය ඇගැයීම

Contributor(s): Publication details: Unesco, 1987.Description: 65p.; 21 cmTitle translated: karyakshamaha sanwardanaya sandaha guru sewaya ageyimaSubject(s): DDC classification:
  • 371.1 KAR
Item type: Lending Materials
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