Nkebi ahịrịokwu nke mbụ: Zedtwitz bụ onye isi oche nke American Contract Bridge League na 1932, otu n'ime òtù ndị e jikọtara ọnụ wee guzobe American Bridge League na 1937. Nke abuo: Von Zedtwitz bụ onye isi oche nke American Bridge League na 1932, otu n'ime òtù ndị e jikọtara ọnụ wee guzobe American Contract Bridge League na 1937. Ajụjụ: Ọ̀ bụ otu ihe ka ahịrịokwu nke mbụ na nke abụọ pụtara? Ee ma ọ bụ Ee e?
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