First aid for irrigators.

Sonraí bibleagrafaíochta
Údair chorparáideacha:	Philippines (Republic). Bureau of Public Works and Communication, Irrigation Service Unit
Formáid:	LEABHAR
Teanga:	Béarla
Foilsithe / Cruthaithe:	Manila [s.n. 19--]
Ábhair:	Irrigation.