"is 99
maps is secured, and the needs of different branchs of
national economy are satisfied in maximum extent.
With due regard for a further development of pro-
ductive forces of the country, aerial surveys for making
maps at I:s50 000, I:25 000 and larger scales are being
planned. So, for instance, when building reservoirs for
large hydro-electrical complexes on the rivers Volga,Ob,
Yenisei, and others, it has been necessary to make,with
the shortest possible delay, large-scale maps to meet
the requirements of designing organizations (building,
hydrotechnical ones, etc.) as also those of forestry and
agriculture. Special attention is being paid to develop-
ing and putting into practice of & methodology for mapp-
ing at I: IOO OOO0 and larger scales such regions where
land-reclamation is being planned in accordance with the
new Five-Year Plan of development of the national econo- & | ©
my of the USSR for 1971-1975.
A satisfactory solution of the problem of mapping
different geographical regions of the country (high- |
lands, steppe, forests,marsh-land, etc.) - in short time
and in strict accordance with high technical standards
may be obtained only on the base of continuous improve-
ment of both technical means and methodology of such
work. It was toward this aim that the activity of scien-
tists and production workers - members of the National
Committee of Photogrammetrists of the USSR - was direct-
ed during the period after the Lausanne Congress of ISF
(1968).
ED CI ER
COMMISSION I.
Aerial surveying and aircraft piloting.
Aerial photography on panchromatic and colour photo- e e
graphic materials is the most widely used method of study
of the Earth's surface. Depending on physical-geogra
cal conditions of the country and special purpose of the
pai-