TY  - GEN
AU  - Foster, J.C.
TI  - World Day ionospheric observations at Millstone Hill, J.C.Forester
KW  - IONOSFERA
KW  - METODOS DE OBSERVACAO
KW  - 551.510.535
KW  - med
KW  - fre
KW  - 551.501.81(744)
ER  -