Lancy, David F.
Intra-cultural variation in cognitive development : conservation of length among the Imbonggu / David F. Lancy, Randall J. Souviney, Venina Kada. - [Port Moresby] : Indigenous Mathematics Project, 1981. - 20 leaves. - Working paper ; 15. . - Working paper (Indigenous Mathematics Project) ; 15. .
Cognition and culture--Papua New Guinea--Ialibu Region.
Imbonggu (Papua New Guinea people).
Intra-cultural variation in cognitive development : conservation of length among the Imbonggu / David F. Lancy, Randall J. Souviney, Venina Kada. - [Port Moresby] : Indigenous Mathematics Project, 1981. - 20 leaves. - Working paper ; 15. . - Working paper (Indigenous Mathematics Project) ; 15. .
Cognition and culture--Papua New Guinea--Ialibu Region.
Imbonggu (Papua New Guinea people).