Answers are grounded in this paper and cite their sources.
ARNHOLD RAINER; (XVII) THE QUAC STICK: A FIELD MEASURE USED BY THE QUAKER SERVICE TEAM IN NIGERIA*, Journal of Tropical Pediatrics, Volume 15, Issue 4, 1 Decemb
No takes yet. Share an insight, caveat, or question.
Albert Rainer (1969) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: