Petto, Pertti J. Anthropological research : the structure of inquiry / by Pertti J.Petto, Gretel H.Petto. - 2nd ed / . - Cambridge : Cambridge University Press , 1970 rep 1996. - xv,333p. : ills,tables ; 23cm . NULL ISBN: 052129228X UKP.18.95 Subjects--Index Terms: ANTHROPOLOGY-RESEARCH Dewey Class. No.: 301.072 / PET/A