mathematics 234 geometry 207 history 196 mathematical analysis 170 geology 157 architecture 149 French language 129 more ... technology 119 chemistry 118 dictionaries 117 educational literature 111 physics 110 algebra 96 classical mechanics 93 civil engineering 86 science 80 inorganic chemistry 77 descriptive geometry 67 mechanical engineering 67 engineering 66 organic chemistry 64 geodesy 62 German language 55 physiology 53 bridges 52 agriculture 51 English language 49 probability theory 48 mineralogy 47 reciprocating steam engines 45 less ...