000 00322nam a2200121Ia 4500
008 210804s9999 xx 000 0 und d
082 _a374.5489
_bUNI
110 _aUniversity Colombo
245 4 _aThe Institue of Workers' Education
260 _aColombo
_bUniversity Colombo
_c1983
300 _aNo pages
942 _cPRGD
999 _c158900
_d158899