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Popular science (2719), Tales (1551), School, training (1163), Geography (750), Politics (610), Agriculture (451), Biology (450), Vocational education (398), History (344), Industry (324), Junior (307), Geography of Hungary (303), Biography (277), Art (251), Fine arts (229), Literature (200), Hungarian history (192), Physics (191), Transportation (188), Healthcare (174), Sounded slide (169), Hungarian literature (169), Botany (168), Cartoon-based (133), Technical history (128), ...
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The english site is coming soon.
1968
R-104 típusú rádióállomás VIII. rész
Home defense, Military technology, Popular science
1952
A General Description of Africa II. (Afrika általános jellemzése II.)
Geography, School, training
1978
Museum-Piece Steam Locomotives (Műemlék gőzmozdonyok )
Popular science, Railway, Transportation
1962
Gépjármű szerkezettan 3. rész
Popular science, Transportation
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