T. K. Velu Pillai , -LRB- 1940 -RRB- '' The Travancore State Manual '' ; 4 volumes ; Trivandrum Caldwell , R -LRB- 1998 -RRB- '' A comparative grammar of the Dravidian or South-Indian family of languages '' 3rd ed .
Robert Caldwell/PERSON. , '' A comparative grammar of the Dravidian or South-Indian family of languages '' 3rd ed .
Robert Caldwell/PERSON. , '' A comparative grammar of the Dravidian or South-Indian family of languages '' 3rd ed .
为简单起见重写这句话: T. K. Velu Pillai , -LRB- 1940 -RRB- '' The Travancore State Manual '' ; 4 volumes ; Trivandrum Caldwell , R -LRB- 1998 -RRB- '' A comparative grammar of the Dravidian or South-Indian family of languages '' 3rd ed . 输出: