Merit Students Encyclopedia, Band 1

acid Adams advertising Afghanistan Africa agricultural Air Force aircraft airfoil airlines airplane airports Alabama Alaska Albania Alberta Alexander Algeria aluminum American Andorra angle angle of attack Angola animals army artery Association became blood body Born Britain British called Canada cells century coast College colonies Congress crops developed engine equation European farm federal feet fish flight flying forests Former France French glands Greek History important independence industry Island John John Adams King Lake land largest live major manufactured ment metal meters miles modern mountain muscle National North northern organization percent pilot plants population President programs region River Roman Saskatchewan short tons Sigmund Spaeth South southern speed sq km square miles tion trade U.S. Air Force United University usually Valley West wing World World War II York Zaire