Author: Chick, N.A.
Publisher:Charles Knight, London
Copyright:1974
Author: Mookerjee, Amalendu Prasad
Publisher:Minerva Publications, Calcutta
Copyright:1974
Author: Jain, Rikhab Dass
Publisher:Atma Ram & Sons, Delhi
Copyright:1960
Author: Chopra, Gulshan Lall
Publisher:Vishveshvaranand Vedic Research Institute, Hoshinapur
Copyright:1960