RePEc added 10 new archives in April: MUT Institute of Transport Economics, Westfälische Wilhelms- Universität Münster MHE Centre for Health Economics, Monash University MSS Department of Agricultural Economics, Mississippi State University BOL University of Bologna, Department of Economics SDS Social Science Research Laboratory, San Diego State University OCC Occidental College PUR Economics/Management, Purdue University UTU Department of Economics, University of Turku SAP Department of Public Economics, University of Rome La Sapienza PCA Autoridade da Concorrencia (Portuguese Competition Authority) With assistance from publishers we have filled some gaps in several journal titles' coverage in RePEc. New journals added to RePEc this month include: Environmental & Resource Economics (Springer) Forum for Health Economics & Policy (bepress) International Journal of Biostatistics (bepress) European Journal of Health Economics (Springer) Tijdschrift voor Economische en Sociale Geografie (Blackwell) Transportation (Springer) Weltwirtschaftliches Archiv (Springer) Research Papers in Economics (RePEc) http://repec.org