CONTENIDO: V..1. DERIVATIVES AND DIFFERENTIALS DEFINITIVE INTEGRALS EXPANSION IN SERIES APPLICATIONS TO GEOMETRY. V.2. PTE.1. FUNCTIONS OF A COMPLEX VARIABLE. TR. BY E.R. HEDRICK AND O. DUNKEL. V.2. PTE. 2. DIFFERENTIAL EQUATIONS. TR. BY E.R. HEDRICK AND O. DUNKEL. V.3. PTE. 1. VARIATIONS OF SOLUTIONS PARTIAL DIFFERENTIAL EQUATIONS OF THE SECOND ORDER. TR. BY HOWARD G BERGMANN.