TY  - BOOK
AU  - Cabré S.J.,R.
AU  - Minaya,E.
ED  - Observatorio San Callixto.
TI  - Propagation and Attenuation of Lg Waves in South America
T2  - Scientific Report ; 
U1  - 526 
PY  - 1987///
CY  - s.l. : 
PB  - Scinetific Report, 
N1  - Fotocopia; Encuadernado
ER  -