mathematics 235 geometry 208 history 201 mathematical analysis 170 architecture 162 geology 158 French language 130 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 67 organic chemistry 64 geodesy 63 German language 55 bridges 54 physiology 53 agriculture 52 English language 49 probability theory 48 mineralogy 47 reciprocating steam engines 45 less ...