TY - BOOK AU - Subramanian, G. ED - Symposium on Solar Planetary Physics TI - Proceedings of the symposium on solar planetary physics : v. 4 : Physical Research Laboratory, Ahmedabad, India, January 20-24, 1976 PY - 1976/// CY - Ahmedabad PB - Physical Research Laboratory KW - Solar Planetary PhysicsPlanetary Physics N1 - Contributed papers : ionospheric E and D layers and mesosphere ER -