ANCIENT KERALA - HISTORY; CANKAM PERIOD; CASTE SYSTEM; KERALA BRAHMINS; VARNA SYSTEM; 64 ANACHARAMS CERAS OF VANCI; DOCTORAL DISSERTATIONS; KERALA DRAVIDA; ARYANIZATION AND SANSKRITIZATION; KERALA ARCHITECTURE; MUSAKAS OF KOLAM; AYS OF VIZHINJAM; CERAS OF MAHODAYAPURAM; THE COLA CONQUESTS; KOLATTIRIS OF KANNUR; SAMUTIRIS OF KOZHIKKODE; PERUMBADAPPUS OF KOCHI; TIRUVITANKURS OF VENATU; COLONIAL POWERS IN KERALA SANKAM PERIOD; TANTRIK ASPECTS; TEMPLE ARCHITECTURE; TEMPLE ENTRY MOVEMENTS; TEMPLE ENTRY PROCLAMATION TRAVANCORE