6 943 disc non decimal counting systems members may interested work dr glendon lean past colleague mine png passed away march year recording work 22 years counting systems papua new guinea oceania documented 24 appendices bound four volumes counting systems 883 languages simple base 10 cycle top thesis also suggested origins counting systems found indigenous cultures spread may also spontaneously developed included records body tally systems numbers also used parts body orderly system cycles every number ten except seven nine think memory many secondary cycles covered austronesian languages papuan languages printed copies volumes appendices available chris wilkins dept mathematics statistics png university technology lae private mail bag papua new guinea professor alan bishop education monash university melbourne also able assist information hoping look mathematical connections languages east timor anyone information could please email thank dr kay owens faculty education university western sydney macarthur po box 555 campbelltown nsw 2560 australia