Benham, Frederic
Economics a general textbook Frederic Benham and Frederic A. Lutz
New York, N.Y. Sir Issac Pitman 1941,
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Livesey, Frank
A textbook of economics
Longman, 1989
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Mitchell, Philip H.
A textbook of general physiology
McGraw-Hill, 1956
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Ross, Alf
A textbook of international law: general part
Longmans, Green , 1947
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Reynolds, Lloyd G.
Economics : a general introduction
Richard D. Irwin, 1966
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