TY - BOOK AU - Malhotara P.L. AU - Prof A P 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 - Study of production rates, loss rates and scale hights in F/sub1/-F/sub2/ transition region using theoretical Ionogram techinque around sunspot minium conditions PY - 1995/// KW - PHYSICS ER -