| Type | Conference Paper - 1st IEA International Research Conference |
| Title | The importance of national options in IEA international comparative studies: Exploring the effects of language proficiency upon secondary students' performance in TIMSS '99 mathematics in South Africa |
| Author(s) | |
| Publication (Day/Month/Year) | 2004 |
| Page numbers | 0-0 |
| City | Nicosia |
| Country/State | Cyprus |
| URL | http://www.iea.nl/fileadmin/user_upload/IRC/IRC_2004/Papers/IRC2004_Howie_Plomp.pdf |
| » | Australia, Belgium, Bulgaria...and 33 more - Trends in International Mathematics and Science Study 1999 |