12 books • 6 series
Book #19: Fourier Transforms. (AM-19)
Book #33: Contributions to the Theory of Partial Differential Equations. (AM-33)
Book #42: Lectures on Fourier Integrals. (AM-42)
Book #66: Advances in the Theory of Riemann Surfaces. (AM-66)
Book #32: Curvature and Betti Numbers. (AM-32)
Book #64: History of Analysis