Dr. Debertin has made the following textbooks available for free download. If you prefer to get a bound copy, the link to Amazon is also provided.
Free PDF Download available at: http://www.uky.edu/~deberti/applied.pdf
Bound paper copies are available at Amazon for a nominal price (about $25) at: http://www.amazon.com/Applied-Microeconomics-Consumption-Production-Markets/dp/1475244347/ref=sr_1_6?ie=UTF8&qid=1379685207&sr=8-6&keywords=debertin
Free PDF download at: http://www.uky.edu/~deberti/agrod5.pdf
Bound paper copies are available at Amazon for a nominal price (under $20) at: http://www.amazon.com/Agricultural-Production-Economics-Second-Edition/dp/1469960648/ref=sr_1_1?ie=UTF8&qid=1379706185&sr=8-1&keywords=debertin
Free download PPT companion with full-page illustrations of figures from Agricultural Production Economics, Second Edition.
Free PDF download at: http://www.uky.edu/~deberti/colorbookvid.pdf
Bound paper copies are available at Amazon for a nominal price ($25) at: http://www.amazon.com/Agricultural-Production-Economics-The-Theory/dp/1470129264/ref=sr_1_2?ie=UTF8&qid=1379706563&sr=8-2&keywords=debertin
David L. Debertin is professor emeritus of agricultural economics at the University of Kentucky where he was on the faculty and taught agricultural production economics for 39 years.