When you enter that cargo tank.

Author/creator United States
Format Book
Publication InfoWashington : U.S. Dept. of Transportation, Coast Guard, 1976.
Description17 p. : ill. ; 9 x 6 cm.
Subjects

General noteCover title.
General note"CG-474."
GPO item number934
Govt. docs number TD 5.2:C 19