Dillavou, Essel R.[at al.]
Principles of business law / Essel R.Dillavou [at al.]
Prentice-Hall, 1962
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Dillavou and Howard`s principles of business law
by William J. Robert [and others]
Prentice-Hall, 1967
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The Principles of Metallographic Laboratory Practice/ ..[etal]
1939
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Gerstenberg, Charles W.
Principles of business
Prentice-Hall, 1918
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Tourism : principles and practice / Chris Cooper... [et.al.]
Longman , 1999
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