Author: Moult,Thomas
Publisher:Arthur Barker,London
Copyright:1935
Author: Ann, Elisabeth
Publisher:Methuen and Co. Ltd., London
Copyright:1935
Author: Gordon, Cyrus H.
Publisher:Collins,London
Copyright:1962
Author: Cousens, Henry
Publisher:Bharatiya Publishing House, Varanasi
Copyright:1976
Author: Raswan, Carl R
Publisher:Huchinson & Co. LTD, London
Copyright:1935
Author: Wodehouse, P. G.
Publisher:Herbert Jenkins, London
Copyright:1935
Author: Drewitt, F. Dawtrey
Publisher:Longmas Green & Co., London
Copyright:1935
Author: Chatterjee, S.
Publisher:The Technical Journals of India, Calcutta
Copyright:1962
Author: Stcherbatsky, F. Th.
Publisher:Dover Publications, New York
Copyright:1962
Author: Dutt,Sukumar
Publisher:George allen and unwin ,London
Copyright:1962