00952nam--2200337---450-99000329427020331620090713123334.0000329427USA01000329427(ALEPH)000329427USA0100032942720090713d1982----km-y0itay50------baengUS||||||||001yySpacetime and geometrythe alfred schild lecturesedited by A. Matzner and L. C. ShepleyAustinUniversity of Texas presscopyr. 1982189 p.22 cmRelativitàSaggiGravità530.11RICHARD,A.SHEPLEY,C.ITsalbcISBD990003294270203316530.11 SPA15263/CBS530.1100219326BKSCIRSIAV79020090713USA011233Spacetime and geometry1122388UNISA