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1Bằng Berridge, William Arthur### CRL customization ### ?> ### Add publisher and desc details ### ?>
Được phát hành 1925Chicago & New York, Shaw, 1925.xxv, 318 p. tables (2 fld.) diagrs. 21 cm. -
2Được phát hành 1926### CRL customization ### ?> ### Add publisher and desc details ### ?>New York : Russell Sage foundation, 1926.xvi p., 1 l., 215 p. : incl. illus. (map) diagrs., forms ; 24 cm.Tác giả khác: “...Berridge, William Arthur...”