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tions 
Forces 
COMMISSION VI 
370 Education 
  
DOCUMENTATION OF LITERATURE 
  
380 Trade. Commerce. Communication and transport 
390 Ethnography. Costumes. Manners. Customs. Folklore 
400 . PHILOLOGY. LANGUAGES. LINGUISTICS 
410 General Philology and Linguistics 
420 Western languages in general. (English) 
430 Germanic languages. (German, Dutch, etc.) 
440 Romance or Neo-Latin languages in general. (French) 
450 Italian, 
460 Iberian languages. 
470 Latin and Greek 
480 Slavonic languages. 
490 Various languages, 
Roumanian, eto. 
Baltic languages 
Oriental languages 
(Spanish, Portuguese, etc.) 
  
.500 NATURAL SCIENCES 
510 Mathematics 
511 
512 
515 
516 
517 
518 
519 
521 
522 
523 
525 
o 
o 
e 
5 
o 
o 
526 
o o o e 
9 
o 
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Arithmetic, 
Algebra 
Trigonometry. 
Descriptive geometry 
Analytical geometry 
Analysis. Calculus 
Theory of numbers 
Polygonometry 
Special methods of calculation 
Combinatorial analysis 
520 Astronomy. Geodesy 
Theoretical astronomy 
Practical astronomy 
Descriptive astronomy. 
Cosmography 
The earth (considered astronomically) 
Constants 
Physics of the globe 
Orbit and motions of the earth 
Geographical coordinates 
Seasons 
Tides 
Terrestrial atmosphere 
Geodesy ard Cartography 
Theory and determination of the shape of the earth 
Measurement of bases 
Triangulation. 
Levelling. 
Measurement of gravity 
Traversing (Terrestrial) 
Astronomical determination of geographical coordinates 
  
  
526,8 
„801 
Cartographic representation of the earth's surface 
Map projection and geographic coordinates 
Conical projections