00368nam a2200133Ia 450000500170000008000190001710000220003624500690005826000450012730000130017258300190018594200130020499900170021720260716043049.0  a19.02.03 F8665  aFreitas, Denis de  aCopyright system : practice and problems in developing countries  bCommonwealth SecretariataLondonGBc1983  av, 87 p.  c3/7/00kM2LMGR  cMmF8665  c39616d39616