1。篇名：Agricultural geography
Grigg Prog Hum Geogr.1981; 5: 268-276
http://phg.sagepub.com/cgi/pdf_extract/5/2/268
2.篇名：Soviet agricultural specialization and efficiency
Kenneth R. Gray
Europe-Asia Studies, 1465-3427, Volume 31, Issue 4, 1979, Pages 542 – 558
http://www.informaworld.com/smpp/ftinterface?content=a783671962&rt=0&format=pdf


3.The role of environmental factors in water utilities’ technical efficiency. Empirical evidence from Spanish companies
Andrés J. Picazo-Tadeo;
Francisco J. Sáez-Fernández; Francisco González-Gómez
Applied Economics, 1466-4283, Volume 41, Issue 5, First published 2009, Pages 615 – 628
http://www.informaworld.com/smpp/ftinterface~content=a784709974~fulltext=713240930

4。Typological Schemes and Agricultural Change: Beyond Boserup in Precolonial South India [and Comments and Reply]
·
Kathleen D. Morrison, Gary M. Feinman, Linda M. Nicholas, Thegn N. Ladefoged, Eva Myrdal-Runebjer, Glenn Davis Stone and Richard Wilk
·
Current Anthropology, Vol. 37, No. 4 (Aug. - Oct., 1996), pp. 583-608
(article consists of 26 pages)
·
Published by: The University of Chicago Press on behalf of Wenner-Gren Foundation for Anthropological Research
·
Stable URL: http://www.jstor.org/stable/2744509
·         5。耕地利用集约度的变化规律研究
·
作
者：

·
张琳张凤荣吕贻忠安萍莉严良政
·
刊
名：

·
中国农业科学 ISTIC PKU

·
年，卷(期)：

·
2008 41(12)
·
http://d.wanfangdata.com.cn/Periodical_zgnykx200812024.aspx