ASTRONOMY JOURNEY TO THE COSMIC FRONTIER THIRD EDITION
JOHN D.FIX2004 年出版726 页ISBN：
FORGOTTEN FRONTIER：A HISTORY OF WYOMING COAL MINING
2222 年出版243 页ISBN：0813310075
Water Frontier：Commerce and the Chinese in the Lower Mekong Region
1750-18802004 年出版202 页ISBN：0742530833
Globalization and Borders Death at the Global Frontier
Leanne Weber and Sharon Pickering2014 年出版248 页ISBN：1137453150
GENETIC TECHNOLOGY A NEW FRONTIER OFFICE OF TECHNOLOGY ASSESSMENT
2222 年出版331 页ISBN：0865313288
GENETIC TECHNOLOGY A NEW FRONTIER OFFICE OF TECHNOLOGY ASSESSMENT
JOHN H.GIBBONS1982 年出版331 页ISBN：086531327X
FREEDOM'S FRONTIER CALIFORNIA AND THE STRUGGLE OVER UNFREE LABOR
EMANCIPATION2013 年出版324 页ISBN：
THE FRONTIER IN HISTORY:NORTH AMERICA AND SOUTHERN AFRICA COMPARED
HOWARD LAMAR LEONARD THOMPSON1981 年出版360 页ISBN：0300027427
SPECIAL EVENTS A NEW GENERATION AND THE NEXT FRONTIER SIXTH EDITION
DR.JOE GOLEDBLATT2010 年出版550 页ISBN：9780470449875
