MDS553.50

Wording: Natural sciences and mathematicsEarth sciences & geologyEconomic GeologyBuilding stonesNot set

0 Information 216,948 ℹ️	1 Philosophy and Psychology 229,419 💭	2 Religions 562,779 🙏	3 Social sciences 1,169,921 👫	4 Language 177,109 💬	5 Natural sciences and mathematics 380,441 🔬	6 Technology 844,132 💡	7 The arts 857,504 🎨	8 Literature 1,201,263 📚	9 History and Geography 703,933 🗺️
50 General Science 30,392 🔬	51 Mathematics 73,720 ➗	52 Astronomy 21,519 🔭	53 Physics 38,941 🍎	54 Chemistry 25,962 ⚗️	55 Earth sciences & geology 32,170 🌎	56 Fossils & prehistoric life 9,345 💀	57 Life Sciences, Biology 50,256 🧬	58 Plants 22,401 🌿	59 Zoology 75,735 🐼
550 Geology 3,677 🌎	551 Geology, Hydrology Meteorology 20,715 🌋	552 Lithology; Petrography 1,642 🤘	553 Economic Geology 2,481 💲	554 Europe 632 🐗	555 Asia 221 🐅	556 Africa 250 🦁	557 North America 1,986	558 South America 95	559 Pacific, Oceania, and other planets 471 🐨
553.0 172	553.1 Ore deposits 46	553.2 Carbon series 561	553.3 Ores of iron 27	553.4 ores of metals other than iron 164	553.5 Building stones 51	553.6 Earthy economic minerals 170	553.7 Mineral waters 514	553.8 Gems; Ornamental stones 495 💎	553.9 Other economic minerals 19
553.50 8	553.51 Marbles and limestones 13	553.52	553.53 1	553.54 1	553.55 Serpentines; Soapstones 2	553.56	553.57	553.58	553.59
553.500	553.501	553.502 1	553.503	553.504	553.505	553.506	553.507	553.508	553.509 7