TY  - BOOK
AU  - Jakovlev, N. V.
ED  - International union of geodesy and geophysics
TI  - Increase of accuracy of angular observations and azimuthal determinations due to elimination of refraction influence
PY  - 1975///]
CY  - [M.
KW  - Москва
KW  - Гд3-1
KW  - rubbk
KW  - Д104.1
ER  -