517.51
G
Gray, Andrew , 1847- 1925.
A treatise on Bessel functions and their applicatons to physics , by Andrew Gray... and G. B. Mathews... 2d. ed. prepared by A. Gray and T. M. MacRobert .... London , Macmillan and co. , limited , 1922 .
xiv , 327 p. diagrs.  23 cm. 
Bibliography : p. 318-322