TY  - GEN
AU  - Surdin, Vladimir 
AU  - Safonova, Margarita
AU  - Hasan, Priya
AU  - Hasan, S. N
TI  - Astronomy olympiads : : problems with solutions / 
SN  - 978-93-5786-650-7
PY  - 2023///
CY  - Bhilai : 
PB  - Orange Books Publication, 
KW  - Practical astronomy
KW  - Astrodynamics
KW  - Planetology
KW  - Astronautics
KW  - Olympiads-Astronomy
ER  -