men-at-arms series Army of the Potomac / text by Philip R.N. Katcher ; colour plates by Michael Youens men-at-arms series American Provincial Corps 1775-1784 / text by Philip Katcher ; colour plates by Michael Youens men-at-arms series American Indian Wars 1860-1890 / text by Philip Katcher ; colour plates by G.A. Embleton men-at-arms series US cavalry on the plains 1850-90 / text by Philip Katcher ; colour plates by Ron Volstad men-at-arms series American Civil War armies : 1: Confederate artillery, cavalry and infantry / text by Philip Katcher ; colour plates by Ron Volstad men-at-arms series American Civil War armies : 4: State troops / text by Philip Katcher ; colour plates by Ron Volstad warrior series Union cavalryman, 1861-65 / Philip Katcher ; illustrated by R. Hook men-at-arms series Chinese civil war armies, 1911-1949 / Philip S. Jowett and Stephen Andrew men-at-arms series Austrian army of the Napoleonic Wars : 2 Cavalry / text by Philip J. Haythornthwaite ; colour plates by Bryan Fosten nature of conservation : a race against time / Philip Ward publicaties study of bessel functions in connection with the problem of two mutually attracting circular discs / by C.J. Bouwkamp publicaties Concerning a new transcendent, its tabulation and application in antenna theory / by C.J. Bouwkamp
