Alvin's secret code /
Hicks, Clifford B.
Alvin's secret code / By Clifford B. Hicks ; Cover design by Constance Ftera. - [1st ed.] - New York ; Toronto : Scholastic Book Services, [1963]. - 160 p. : illus. ; 22 cm.
5th printing
Ciphers--Fiction.
Buried treasure--Fiction.
Mystery and detective stories.
Alvin's secret code / By Clifford B. Hicks ; Cover design by Constance Ftera. - [1st ed.] - New York ; Toronto : Scholastic Book Services, [1963]. - 160 p. : illus. ; 22 cm.
5th printing
Ciphers--Fiction.
Buried treasure--Fiction.
Mystery and detective stories.