Please note we do not work weekends. All offers, questions, or concerns may not be answered until

Monday. Please understand this means you may need to resubmit your offer Sunday evening. Thank you for

supporting our libraries and have a great weekend.

Guide to Refinery Operating Costs (Process Costimating)    Second edition contains new installments, plus a number of corrections.

All proceeds benefit the Libraries of Pima County. Please review all photos. This listing has been

donated. Please note that the listing is for what you see in the listing. We photograph all of it so you

know what you are purchasing. The sale of the item(s) benefits Friends of the Pima Library (501c3

non-profit).