TY  - RPRT
TI  - Secular variations of L, B-coordinates
AU  - Getselev, I. V.
AU  - Gorchakov, E. V.
AU  - Eltekov, V. A.
PY  - 1975
UR  - https://ntrs.nasa.gov/citations/19750008393
ID  - 19750008393
ER  -