[A]The authors are indebted to many persons for furnishing samples for testing and for making duplicate tests. This cooperation is gratefully acknowledged with thanks.
[A]The authors are indebted to many persons for furnishing samples for testing and for making duplicate tests. This cooperation is gratefully acknowledged with thanks.
[A]The authors are indebted to many persons for furnishing samples for testing and for making duplicate tests. This cooperation is gratefully acknowledged with thanks.
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THE CORSE PRESS, Inc.,
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