Needed Reference Services for American Agriculture

standards for virtual reference services

nowadays, standard seems to be very important and necessary in all aspects of the life including reference services in libraries. this article is to survey the role of standards in electronic reference services and also considers some sample application instructions which are presented in the dupont- university. by the end, the guide for digital reference services which is called ifla is presen...

reference services

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Needed Services For Network Performance Evaluation

Ecosystem services and dis-services to agriculture

Wei Zhang⁎, Taylor H. Ricketts, Claire Kremen, Karen Carney, Scott M. Swinton Department of Agricultural Economics, Michigan State University, East Lansing, MI 48824-1039, United States Conservation Science Program, World Wildlife Fund — U.S., Washington, DC 20037, United States Department of Environmental Science Policy and Management, University of California, Berkeley, CA 94720-3114, United ...

Energy Use in American Agriculture