Seventh annual cataloge of Cyphers Incubator Company : manufacturers of the Cyphers non-moisture, self-ventilating and self-regulating incubators, the improved Cyphers brooders and a full line of poultry appliances, also dealers in poultry supplies . ., {. S. A., January 1, 1903. 16. 1 r Construction of Cyphers Incubators

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Keywords: ., bookcentury1900, bookdecade1900, booksubjectpoultry, bookyear1903