Boletin mensual.

Bibliografiska uppgifter
Institutionell upphovsman:	Manila Observatorio
Materialtyp:	Continuing Resource
Språk:	Spanish
Publicerad:	Manila Tipo-Litografia Privada del Observatorio 18-
Ämnen:	Meteorology > Philippines. Earthquakes > Philippines. Magnetism, Terrestrial > Philippines.