01518     2200205   4500001002100000005001500021035002000036008004100056245001000097100001900107260003200126300002200158020001800180084001800198520103800216082001201254650002301266650001201289990001101301INLIS00000000000110520211201100157  a0010-0621000705211201                           0      1 aSteel1 aAngley, Andrew  aItaly :bWayland Ltd,c1992  a32 hlm. ;c26 cm.  a1-56847-044-4  aR.333.8 ANG s  aRESOURCESThis 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.  aR.333.8 4aSumber Penghasilan 4aStenlis  a017822