Differential Calculus - A.R. Vasishtha; S.K. Sharma A.K. Vasishtha (Meerut Krishna Prakashan Media (P) Limited, 2005)
A.R. Vasishtha; S.K. Sharma & A.K. Vasishtha: Differential Calculus. (18th Ed) Meerut. Krishna Prakashan Media (P) Limited, 2005.--(515.33VAS)
ENGLISH