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1מאת Baecklund, Per Sigurd### CRL customization ### ?> ### Add publisher and desc details ### ?>
יצא לאור 1914Uppsala, K. W. Appelberg, 1914.4 f. p., 211 p., 4 p. of plates ill. 23 cm. -
2מאת Bæcklund, Per Sigurd### CRL customization ### ?> ### Add publisher and desc details ### ?>
יצא לאור 1911Lund, Berling, 1911.144 p. 24 cm.