Challenger :
Ritchie, G. S. 1914-2012.
Challenger : the life of a survey ship / by George Stephen Ritchie ; with a pref. by Vice-Admiral Sir Guy Wyatt. - London : Hollis & Carter, 1957. - 249 p. : ill. ; 23 cm.
Challenger (Steamship)
Hydrographic surveying.
VM395.C4 / R58 1957
Challenger : the life of a survey ship / by George Stephen Ritchie ; with a pref. by Vice-Admiral Sir Guy Wyatt. - London : Hollis & Carter, 1957. - 249 p. : ill. ; 23 cm.
Challenger (Steamship)
Hydrographic surveying.
VM395.C4 / R58 1957