The geometry of photographs ; the projective transformation ; various specialisations of the general formulae / by A.J. v.d. WeeleChapter 1.2, The geometry of photographs : the projective transformation ; Chapter 1.3, Various specialisations of the general formulae / by A. J. v. d. WeeleFotogrammetrie en civiele techniek / door A.J. van der WeeleFotogrammetrie / A.J. van der Weele