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Transactions of the Symposium on Photo Interpretation

pletely without a comprehensive aerial view. It makes no difference whether
these photographs are used for studying changes in a longstanding cultural
landscape or whether they are used to document a developing region. The
further research necessary for the opening up of the country can be based on the
indications obtained in the natural resources inventory survey, which enables
the investigators to concentrate their efforts on the most promising parts. It is
only in this way that the billions of tomorrow can be fed adequately and attain
a better standard of living. May I express the wish that this Symposium, at
which so many experts in the various fields of aerial photo interpretation are
present, will contribute to the furthering of principles and methods of natural
resources inventory for the benefit of mankind.