Agriculture. 

 - Chicago :  World Book,  c2009 
 - 48 pages :  color illustrations ;  27 cm. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/>The domestication of plants and animals -- The hoe -- The plow -- Irrigation -- Crop rotation -- The water mill and water wheel -- The windmill -- The horse harness -- The seed drill -- The Norfolk system -- The cotton gin -- The steel plow -- The reaper -- The grain elevator -- The tractor -- Fertilizer -- Hybrid crops -- Pesticides -- Genetically modified food -- Important dates in agriculture. 
<br/><br/> "An exploration of the transformative impact of inventions and discoveries in agriculture. Features include fact boxes, sidebars, biographies, and a timeline, glossary, list of recommended reading and Web sites, and index"--Provided by publisher 
<br/><br/><label>ISBN: </label>9780716603856 
<br/><br/><label>Subjects--Topical Terms: </label><br/>AGRICULTURAL INNOVATIONS -- JUVENILE LITERATURE
<br/><br/><label>LC Class. No.: </label>S 494.5.I5 .A37 2009