Celestial navigation 2 /
Ynion, Eugenio J.
Celestial navigation 2 / Eugenio J. Ynion. - Quezon City: Arts & Letters Press, c2003. - 121 pages : ill., b & w ; 23 cm.
9710306037
Celestial navigation.
FIL VK 555 / Y55 2003
Celestial navigation 2 / Eugenio J. Ynion. - Quezon City: Arts & Letters Press, c2003. - 121 pages : ill., b & w ; 23 cm.
9710306037
Celestial navigation.
FIL VK 555 / Y55 2003