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1gan Young, Leona Esther, 1895-### CRL customization ### ?> ### Add publisher and desc details ### ?>
Cyhoeddwyd 1940New York, Prentice-Hall, inc., 1940.ix, 644 p. col. front., illus., diagrs. 24 cm.Awduron Eraill: “...Porter, C. W. (Charles Walter), 1880-1971...”
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2gan Young, Leona Esther, 1895-### CRL customization ### ?> ### Add publisher and desc details ### ?>
Cyhoeddwyd 1943New York, Prentice-Hall, 1943.ix, 527 p. col. front., illus., diagrs. 24 cm.Awduron Eraill: “...Porter, C. W. (Charles Walter), 1880-1971...”
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3gan Young, Leona Esther, 1895-### CRL customization ### ?> ### Add publisher and desc details ### ?>
Cyhoeddwyd 1944New York, Prentice-Hall, 1944.iv, 260 p. illus. 26 cm.Awduron Eraill: “...Porter, C. W. (Charles Walter), 1880-1971...”
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4gan Young, Leona Esther, 1895-### CRL customization ### ?> ### Add publisher and desc details ### ?>
Cyhoeddwyd 1950New York, Prentice-Hall, 1950.xiv, 608 p. illus. 24 cm.Awduron Eraill: “...Porter, C. W. (Charles Walter), 1880-1971...”
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5gan Young, Leona Esther, 1895-### CRL customization ### ?> ### Add publisher and desc details ### ?>
Cyhoeddwyd 1950New York : Prentice-Hall, 1950.iv, 278 p. : ill. ; 26 cm.Awduron Eraill: “...Porter, C. W. (Charles Walter), 1880-1971...”