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CHARLES B.CRAVER1997 年出版0 页ISBN：
Distance education : The foundations of effective practice
John R. Verduin1991 年出版279 页ISBN：
THE EFFECTIVE AND THE INEFFECTIVE COLLEGE TEACHER
ANNA Y. REED1935 年出版344 页ISBN：
THE CHALLENGE OF EFFECTIVE SPEAKING ELEVENTH EDITION
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EFFECTIVE DATABASES FOR TEXT AND DOCUMENT MANAGEMENT
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THE CHALLENGE OF EFFECTIVE SPEAKING NINTH EDITION
RUDOLPH F.VERDERBER1994 年出版436 页ISBN：0534163327
EFFECTIVE READING IMPROVING READING RATES AND COMPREHENSION
ALTON L.RAYGOR1985 年出版321 页ISBN：0070512620
EFFECTIVE LEGAL NEGOTIATION AND SETTLEMENT FIFTH EDITION
CHARLES B.CRAVER2005 年出版725 页ISBN：0820561134
SAFE AND EFFECTIVE EXERCISE FOR OVERWEIGHT YOUTH
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