Co  gi   bi  ma t trong ba  n tay?
By: ba  n vie t va n: Ng~u-Va n-Ba ng.
Contributors: Dujarric, Jeanne.
Publisher: Loai sa ch Hoc La  m Nguo  i
Published: 1974
Place of publication: Saigon
Language: vie
Work titles: Quoi de myste  res dans les mains.