Angley, Andrew text Italy Wayland Ltd 1992 32 hlm. ; 26 cm. RESOURCESThis colorfully illustrated series introduces the world s most important resources. In easy-to-read chapters each book shows how a raw material is obtained and processed to make the products people use every day, Plus, fun-to-do projects enable you to learn about these materials firsthand,STEELFrom the bike you ride to the huge skyscrapers that tower above, steel is one of the most important metals-in the world, Steel is eheap.to make and shape, and it s very strong.The amazing story of steel is revealed: where it comes from, who discovered it, how it is made, what it is used for, how scrap metal can be recycled, and much more, You ll explore the scientific process of turriing molten iron.into steel. You, will discover that the earth s core is 90 percent iron and other amazing facts. You will learn about the many products that are made from steel: car bodies, paper clips, glasses, knives and forks, and hundreds of other everyday objects. Fun projects show you how to use steel to -make a compass and more. iwn. Sumber Penghasilan Stenlis R.333.8 R.333.8 ANG s 1-56847-044-4 211201 20211201100157 INLIS000000000001105 Converted from MARCXML to MODS version 3.5 using MARC21slim2MODS3-5.xsl (Revision 1.106 2014/12/19)