Essential idioms in English

 Dixon, Robert J.;

New York : Regents Publishing , 1971

Philosophy and education : a total view / Adrian M. Dupuis, Robert B. Nordberg

 Dupuis, Adrian M.; Nordberg, Robert B.;

Beverly Hills, California : The Bruce Publisihing Company , 1973

The Analysis of social interactions

 Cairns, Robert B.;

Hillsdale, N.J. : Lawrence Erlbaum Associates, , 1979

American government reader / Robert D. Cantor

 Cantor, Robert D.;

New York : Harper \r\n Row , 1978

Ships / Edward V. Lewis

 Lewis, Edward V.; Brien, Robert O.;

Nederland : Time Life International , 1974

Exploring religious meaning / Robert C. Monk

 Monk, Robert C.;

New Jersey : Prentice Hall , 1980

Introduction to physical antropology

 Nelson, Harry; Jumain, Robert;

USA : West , 1979

Three psychologies : perspectives from Freud, Skinner and Rogers / Robert D. Nye

 Nye, Robert D.;

California : Brooks Cole Publishing , 1981

Kamus analisa politik / Jack C. Plano

 Plano, Jack C.; Riggs, Robert E.; Robin, Helena S.; Siregar, Edi S.;

Jakarta : Rajawali Pers , 1985

The Truth about English

 Pinckert, Robert C.;

New Jersey : Prentice Hall , 1981

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