mathematics 223 history 196 geometry 193 mathematical analysis 169 geology 158 architecture 154 French language 130 more ... technology 119 dictionaries 117 chemistry 116 educational literature 111 physics 103 algebra 90 classical mechanics 87 civil engineering 84 science 79 inorganic chemistry 77 descriptive geometry 67 mechanical engineering 67 engineering 67 organic chemistry 64 geodesy 60 German language 55 physiology 53 agriculture 52 bridges 51 English language 49 probability theory 47 mineralogy 46 reciprocating steam engines 45 less ...