Use the filter function to narrow down the selection by region, income, publication type and/or other criteria.
Önder, Z. 2002
Hsieh, C.R., Hu, T.W., Lin, C.F.J. 1999
Jha, P., Chaloupka, F.J. 1998
Maravanyika, E. 1997
Da Costa e Silva, V.L. 1997
Van der Merwe, R. 1997
van Walbeek, C.P. 1996
Reekie, W.D. 1994
Tansel, A. 1992
Chapman, S., Richardson, J. 1990