Ralph Bulmer
Ralph Neville Hermon Bulmer (3 April 1928 – 18 July 1988) was a twentieth-century ethnobiologist who worked in Papua New Guinea, particularly with the Kalam people. From 1974 he made a radical shift by changing the role of his Kalam informants and collaborators, allowing them to shape the purpose of ethnography and to make them authors rather than consultants.