A more general method for preparing commodity-by-commodity input-output tables under the commodity technology assumption is presented for the case when there are produced and non-produced by-products, originating in principal and in secondary production. Existing methods of the same family are...

This paper distinguishes between by-products of the activity and those associated with changes in the demand for another jointly-produced output. It attempts to define when one or more jointly-produced outputs would be by-products of the activity and others would be produced at the margin. The...