"Boy Scouts of America." . . "Boy Scouts of America" . "Aeronautics Juvenile literature." . . . . "Aeronautics." . . . . . . . . . . . . . . . . . . "Outlines requirements for pursuing a merit badge in aviation."@en . "Outlines requirements for pursuing a merit badge in aviation." . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . "Aviation" . "Aviation"@en . "Handbooks and manuals" . . "Handbooks and manuals"@en . . . "Juvenile works" . . "Juvenile works"@en . "Aviation." . .