mathematics 208 history 201 geometry 192 mathematical analysis 160 educational literature 151 geology 145 dictionaries 119 more ... technology 118 architecture 99 chemistry 99 physics 97 civil engineering 93 classical mechanics 92 French language 90 algebra 84 science 82 mechanical engineering 68 descriptive geometry 66 geodesy 64 inorganic chemistry 63 organic chemistry 59 physiology 53 engineering 46 reciprocating steam engines 45 exhibitions 44 agriculture 44 military affairs 43 mineralogy 42 bridges 42 geography 39 less ...