කාර්යක්ෂමතා සංවර්ධනය සඳහා ගුරු සේවය ඇගැයීම

Contributor(s): Publication details: Unesco, 1985.Description: 64p.; 20cmTitle translated: karyakshamatha sanwardanaya sandaha guru sewaya agayimaSubject(s): DDC classification:
  • 371.144 KAR
Item type: Lending Materials
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