Ang abakada ng lupa = Alphabet of the soil

Bibliográfalaš dieđut
Váldodahkki:	Nannetti, Guillermo
Materiálatiipa:	Girji
Almmustuhtton:	[Manila United Nations Educational and Scientific Organization; (Manila) : Bureau of Printing 1960.
Fáttát:	Land > Study and teaching. Agriculture.