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Popular science (2717), Tales (1550), School, training (1163), Geography (750), Politics (610), Agriculture (450), Biology (448), 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 (167), Cartoon-based (132), Technical history (128), ...
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The english site is coming soon.
1962
Healing Machines (Gyógyító gépek )
Healthcare, Popular science
1955
Ásványolaj
Chemistry, Industry, Physics, School, training
1963
A lőelmélet ABC-je
Home defense, Military technology, Physics, Popular science
1969
The Applications of Folk Embroideries and Tapestry (Népi hímzések és szőttesek alkalmazása )
Ethnography, Popular science
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