කාර්යක්ෂමතා සංවර්ධනය සදහා ගුරු සේවය ඇගැයීම

Contributor(s): Publication details: Yunesco, 1987.Description: 65p.; 21 cmTitle translated: Karyakshamatha sanwardanaya sadaha guru sewaya AgayimaSubject(s): DDC classification:
  • 371.3 KAR
Item type: Lending Materials
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