TY  - BOOK
AU  - Mangal Sain
AU  -  Dr S N Mitra Supervisor
AU  - University of Delhi. Faculty of Science. Department of Physics and Astrophysics
ED  - University of Delhi. Faculty of Science. Department of Physics and Astrophysics
TI  - Investigation of lower ionosphere through the study of longwave propagation and sid effects
PY  - 1968///
KW  - PHYSICS
ER  -