השביעיה הסודית מפתעת
Contributors: Karmeli, Avner
Series: Sheviʻiyah ha-sodit
Publisher: מ. מזרחי
Published: 1964
Place of publication: תל־אביב
Language: heb
Number of pages: 109
Other titles: ha-Sheviʻiyah ha-sodit muftaʻat
Work titles: Secret seven mystery