Boy Scouts in a Submarine; Or, Searching an Ocean Floor by G. Harvey Ralphson  || Ralphson, G. Harvey (George Harvey), 1879-1940 || Submarines (Ships) -- Juvenile fiction; Boy Scouts of America -- Juvenile fiction; United States. Secret Service -- Juvenile fiction; Salvage -- Juvenile fiction || Children's Book Series; Browsing: Children & Young Adult Reading; Browsing: Fiction || Language : English