תעלומת הנוסחה הסודית
Series: Sifre mistorin -- 72
Publisher: M. Mizraḥi
Published: 1963
Place of publication: Tel Aviv
Language: heb
Number of pages: 222
Subjects: Private investigators; Fiction; Nero Wolfe (Fictitious character)
Other titles: Taʻalumat ha-nusḥah ha-sodit
Work titles: Alphabet hicks