J. van Zyl

South African national HIV prevalence, incidence, behaviour and communication survey, 2008: a turning tide among teenagers?

Olive Shisana, T. Rehle, Leickness C. Simbayi et al. · 2009 · 791 citations

Teenage Pregnancy, Social Sciences, Sexual Communication +17

South African National HIV Prevalence, Incidence, Behaviour and Communication Survey, 2017: towards achieving the UNAIDS 90-90-90 targets

Leickness C. Simbayi, Khangelani Zuma, Nompumelelo Zungu et al. · 2019 · 134 citations

Unaids 90-90-90, Sexual Health, Epidemiological Trend +8

DEFINING SMALL-SCALE FARMERS IN THE SOUTH AFRICAN CONTEXT

Johann F. Kirsten, J. van Zyl · Agrekon · 1998 · 121 citations · Full text

Labour-related structural trends in South African maize production

J. van Zyl · Agricultural Economics · 1987 · 40 citations

Sout African Agriculture, Economics, Rural Economy +12

Food security and structural adjustment: Empirical evidence on the food price dilemma in Southern Africa

J. van Zyl, Gerhard Coetzee · Development Southern Africa · 1990 · 34 citations

Local Food Systems, Economics, Public Policy +14