History 22 Early works to 1800 18 Metallurgy 18 Cooking, Roman 16 Cooking 14 Mineral industries 14 Cooking, Italian 11 more ... Water-supply 11 Zoology 9 Aqueducts 8 Precious stones 6 Mechanical engineering 5 Paleontology 5 Surveying 5 Cuisine romaine 4 Food 4 Gastronomy 4 Inventions 4 Mines and mineral resources 4 Mining engineering 4 Sources 4 Stone 4 Venetian style 4 Wine and wine making 4 Clocks and watches 3 Cooking, Medieval 3 Distillation 3 Gold mines and mining 3 Home economics 3 Industrie 3 less ...