12 
VII R 1 — 91 
VII R 2 — 328 
VII R 3 — 325 
VII Si — 42 
VII TK 1 — 302 
VII T 2 — 193 
VII W 1 — 187 
VII YS 1 — 296 
X A 1 
XB 1 
X B 3 
XC 1 
XHB 1 
X HS 2 
XII 
X I 2 
XMl 
R. G. Ray, USA: Status of photogeology in the U. S. Geological Survey. 
L. Reed, USA: The role of photo-interpretation in air force charting. 
E. Rogers, USA:** Problems in comparing photo interpretation research 
results from different studies. 
K. Stone, USA** Air photo interpretation procedures. 
T. Kvarnbrink—A. Thunberg, Sweden: A method for the investigation of 
ground visibility in aerial photography over forested areas. 
R. Thorên, Sweden: Naval photo interpretation. 
M. Witenstein, USA: Photo sociometrics—the application of aerial photo 
graphy to urban administration and planning problems. 
H. Young—E.Stoeckeler, USA:** Quantitative evaluation of photo inter 
pretation mapping. 
Group X — Delayed material 
National report of Austria. 
National report of Japan. 
National report of the Netherlands. 
National report of Portugal. 
Work Progress in Photogrammetry by The Chinese Society of Photogram- 
metry on Formosa 1953—1956. 
F. Ackermann, Germany: Zur rechnerischen Orientierung von Konvergent 
aufnahmen. 
R. Bosshardt, Switzerland: Senkrecht- oder Konvergentaufnahmen? 
D. A. Boon, Netherlands: Recent development in photo-interpretation of 
tropical forests. 
M. Caputo, Italy: La photogrammétrie employee dans le lever de liquides 
en mouvement. 
W. Häberlin—W. Bachmann, Switzerland: Rapport sur l’essai contrôlé 
№ 2 »Vercors». Etablissement photogrammétrique d’une carte à l’échelle 
1: 50000. 
Hlawaty-Stickler, Austria: Signalisierungsversuch. 
Rapport National de l’Italie: Rapport pour commission IV. 
Rapport National de l’Italie: Rapport pour commission VI. 
Ministère des travaux publics et de la reconstruction, Belgique: Activité 
des services de topographie et de photogrammétrie 1952—1956.