Orthophatos at ITC /
by Visser and L. Van Zuylen
- Delft : Netherlands, 1968.
- 51 p. : ill. ; 24 cm.
- International Training centre for Aerial Survey; ser. a, no 41/42 .
In pocket film negative, 1 film diapositive, 1 copy of staliline, 1 sample col. map