An Introduction to the Calculus by George A Gibson 1926 MacMillan hardback

The Calculus of Variations by NI Akhiezer HC DJ 1962

Advanced Calculus by Edwin Bidwell Wilson (MIT) - Dover PB 1958

An Introduction to the Calculus of Variations by Charles Fox

The Calculus of Variations by Akhiezer, Naum I. Hardcover

An introduction to the calculus of variations by Charles Fox

Introduction to the Calculus of Variations (Paperback or Softback)

Introduction To Tensor Calculus and Relativity by Lawden - 1962 HB (5017)