History 22 Early works to 1800 18 Metallurgy 18 Cooking, Roman 16 Cooking 14 Mineral industries 14 Cooking, Italian 11 mer ... Water-supply 11 Zoology 9 Aqueducts 8 Masses 8 Requiems 8 Precious stones 6 Mechanical engineering 5 Operas 5 Paleontology 5 Surveying 5 Choruses, Sacred (Mixed voices) with orchestra 4 Cuisine romaine 4 Excerpts 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 mindre ...