S. Dahms-Verster , N. J. Baker , R. Greenfield
Environmental Monitoring and Assessment 190 ( 7) 427 -427
N. Degger , A. Avenant-Oldewage , R. Greenfield
African Zoology 44 ( 2) 204 -207
C.M. Volschenk , Y. Ikenaka , Y.B. Yohannes , S.M. Nakayama
Pesticide Biochemistry and Physiology 156 44 -55
Z Jiri , A Tazvivinga , R Greenfield , JHJ Van Vuren
Water SA 44 ( 2) 318 -327
R Greenfield , JHJ van Vuren , V Wepener
African Journal of Aquatic Science 35 ( 1) 55 -59
R Greenfield , JHJ van Vuren , V Wepener
African Journal of Aquatic Science 37 ( 2) 219 -224
R Musa , R Greenfield
African Journal of Aquatic Science 43 ( 1) 59 -69
LJ Connell , GR Jansen van Rensburg , A Avenant-Oldewage , R Greenfield
African Journal of Aquatic Science 45 ( 3) 317 -328
N J Smit , G Howatson , R Greenfield
African Journal of Aquatic Science 34 ( 3) 255 -259
K Beine , S Dahms-Verster , R Greenfield
Fish Physiology and Biochemistry 48 ( 5) 1221 -1233
N Smit , Ruan Gerber , Gordon O’Brien , R Greenfield
Water Research Commission, Pretoria. WRC Report No. KV 285 ( 11)
R Greenfield , JHJ Van Vuren , V Wepener
Water SA 33 ( 5)
TJ De Haas , LJ Connell , R Greenfield
African Zoology 56 ( 3) 192 -201
FH van der Bank , R Greenfield
Suid-Afrikaanse Tydskrif vir Natuurwetenskap en Tegnologie 31 ( 1) 1 -1
W Vlok , CL Cook , RG Greenfield , D Hoare
WRC Report ( 1258/1) 06 -06