Free global health resource - Little Green Data Book, 2005 edition. http://web.worldbank.org/WBSITE/EXTERNAL/NEWS/0,,contentMDK:20455564~pagePK:34370~piPK:34424~theSitePK:4607,00.html

Copies can be requested by emailing an address listed on this page: http://lnweb18.worldbank.org/ESSD/envext.nsf/44ByDocName/EnvironmentalIndicatorsCurrentInitiativesTheLittleGreenDataBook2005

Are you able to include pdf files of ebooks in your OPAC? If so, here is a link to the pdf:
http://lnweb18.worldbank.org/ESSD/envext.nsf/44ByDocName/TheLittleGreenDayaBook2005/$FILE/2005Littlegreendatabook.pdf