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1by Helbling, Carl### CRL customization ### ?> ### Add publisher and desc details ### ?>
Published 1974Düsseldorf : IdW-Verlag, 1974.367 p. ; 23 cm. -
2by Helbling, Carl### CRL customization ### ?> ### Add publisher and desc details ### ?>
Published 1960Winterthur : Keller, 1960.xiv, 198 p. : ill., tab. ; 21 cm. -
3by Helbling, Carl, 1897-### CRL customization ### ?> ### Add publisher and desc details ### ?>
Published 1922Bern, Seldwyla, 1922.54 p. 23 cm. -
4by Helbling, Carl, 1897-### CRL customization ### ?> ### Add publisher and desc details ### ?>
Published 1922Switzerland : Universität Zürich, 1922.50 p.