Beskrivning
While attending the Teen Inventors Club competition in Chicago, Frank and Joe Hardy discover that someone is trying to sabotage Roger the Lobber, an automatic tennis ball retrieval and return unit. Original.
Bokdetaljer
Format
Pocketbok
Sidor
160 sidor
Språk
Engelska
Publicerad
Dec 1, 1993
Förlag
Aladdin
Upplagor
3 editions
ISBN-10
0671793136
ISBN-13
9780671793135