Celestial navigation for yachtsmen /
Blewitt, Mary.
Celestial navigation for yachtsmen / Mary Blewitt. - New York : John de Graff, 1967. - 94 p. ; 21 cm.
0-8286-0028-7
VK555 / B54
Celestial navigation for yachtsmen / Mary Blewitt. - New York : John de Graff, 1967. - 94 p. ; 21 cm.
0-8286-0028-7
VK555 / B54