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Resource: Engineering & Technology for a Sustainable World (ISSN 1076-3333) (USPS 009-560) is the monthly publication of ASAE — the Society for engineering in agricultural, food, and biological systems. The Society is a not-for-profit professional and technical organization of members worldwide interested in engineering knowledge and technology for food and agriculture, associated industries and related resources. The magazine maintains executive, editorial, subscription and advertising offices at ASAE headquarters, 2950 Niles Road, St. Joseph, MI 49085-9659, USA; 269-429-0300, fax 269-429-3852, hq@asae.org.
Magazine staff: Donna Hull, Publisher, hull@asae.org; Sue Mitrovich, Features Editor, mitro@asae.org; Suzanne Howard, Inside ASAE and Update Editor, howard@asae.org; Pam Bakken, Advertising Sales Manager and Production Editor, bakken@asae.org.
Editorial Advisory Board: Editorial Advisory Board: Chair Joseph M. Zulovich, University of Missouri; Vice Chair Anissa D. Morton, Enviro Ag Engineering Inc.; Secretary Edward C. Martin, University of Arizona; Ali Demirci, Pennsylvania State University; Carroll E. Goering, University of Illinois; Robert D. Grisso, Virginia Tech; Lal Kushwaha, University of Saskatchewan; Yanbin Li, University of Arkansas; Rabi H. Mohtar, Purdue University; Michael O. Ngadi, McGill University; Harold J. Schramm, technical consultant; Peter E. Wright, Cornell University; Ex officio: Publications Council Chair Clifford A. Flood, Jr., Auburn University.
A subscription to Resource: Engineering & Technology for a Sustainable World is included in the annual ASAE membership dues. Annual nonmember subscription rates are $69.12, including postage in the United States. Add $25 for postage outside the United States. Overseas airmail rates available on request. Single issues are available for $5.50 for members, $7.50 for nonmembers. Contact ASAE order department, 269-428-6325. An application for membership can be obtained by contacting ASAE.
Change of address: Send recent mailing label and address with ZIP code. Allow four weeks for change to become effective.
Postmaster: Send address changes to Resource, 2950 Niles Road, St. Joseph, MI 49085-9659, USA. Periodical postage is paid at St. Joseph, MI, USA, and additional post offices.
Permission to reprint articles available on request. Reprints, in black and white or color, can be ordered in large quantities for a fee. Contact Donna Hull, 269-428-6326. Electrostatic reprints of individual articles, issues, or entire volumes may be purchased from University Microfilms, Box 1346, Ann Arbor, MI 48106, USA; 800-521-0600.
Statements in this publication represent individual opinions. Resource: Engineering & Technology for a Sustainable World and ASAE assume no responsibility for statements and opinions expressed by contributors. Views advanced in the editorials are those of the contributors and do not necessarily represent the official position of ASAE.
Copyright 2003 by American Society of Agricultural Engineers.
ASAE officers: Lyle E. Stephens, President; Robert J. Gustafson, President-elect; R. Wayne Skaggs, Past President; James C. Converse, Meetings Chair; R. Nolan Clark, Membership Development Chair; Clifford A. Flood, Jr., Publications Chair; Barrie L. Smith, Standards Chair; Gary D. Bubenzer, Treasurer; M. Melissa Moore, Executive Vice President.
American Society of Agricultural Engineers
2950 Niles Road
St. Joseph, MI 49085-9659, USA
269-429-0300
fax 269-429-3852
HQ@asae.org
www.asae.org