Great Trek thema EDItEUR::1 Place qualifiers::1Q Other geographical groupings: Oceans and seas, historical, political etc::1QB Historical states, empires, territories and regions::1QBA Ancient World thema EDItEUR::N History and Archaeology::NH History::NHC Ancient history thema EDItEUR::N History and Archaeology::NH History::NHH African history thema EDItEUR::N History and Archaeology::NK Archaeology::NKD Archaeology by period / region thema EDItEUR::Q Philosophy and Religion::QR Religion and beliefs::QRR Other religions and spiritual beliefs::QRRT Indigenous, ethnic and folk religions and spiritual beliefs::QRRT1 Indigenous religions, spiritual beliefs and mythologies of the Americas Atkinson cycle Boer pioneers CFD CeO2 doping Empathy GRI-Mech 3.0 Lewis number MP-PIC method NO emissions Neurofeedback PIV Pretoria Q1-390 RC321-571 Sensorimotor gating South Africa T1-995 TA1-2040 Voortrekker Monument Voortrekker monument activated carbon sorbent affective air-pollution control animal model