North polar distances of the sun ... computed for the 20th meridian east of Greenwich ...

Sonraí bibleagrafaíochta
Údair chorparáideacha:	Philippines (Commonwealth) Dept. of agriculture and commerce, Philippines. Bureau of lands
Formáid:	LEABHAR
Teanga:	Béarla
Foilsithe / Cruthaithe:	Manila s.n. 19--.
Ábhair:	Sun > Tables.