English; Kerala History DEPRESSED CLASS; DIGITAL BOOK ARCHIVE; FEUDALISM; KETTU KALYANAM; MALABAR - HISTORY; MALABAR DRAMA; MALABAR NAIR THARAWADU; MARUMAKKATHAYAM; MATRILINEAL SYSTEM; ONAM; RELIGIOUS LIFE SERPENT WORSHIP; SUPERSTITIONS; THIRUVATHIRA; TRADITIONS; VISHU;