The Hardy boys detective handbook,
by Franklin W. Dixon, in consultation with William F. Flynn.
- [Rev. ed.]
- New York, Grosset & Dunlap [1972]
- 214 p. illus. 21 cm.
- His The Hardy boys .
Relates seven cases in which the Hardy brothers use police technology to track down criminals. Details of these techniques and procedures are given in the last five chapters.