TY  - BOOK
AU  - Gupta, Jagdish Chandra 
AU  - Chapman, Sydney 
TI  - Manual of the coefficients of the first four harmonics of the solar and lunar daily geomagnetic variations computed from igy/c and certain other data
T2  - NCAR Manuscript NO. MS 68 - 110
PY  - 1970///
CY  - Bombay
PB  - Indian Institute of Geomganetism
KW  - Geomagnetic VariationsIgy
ER  -