By Allan EL   Froneman PW   in African Journal of Aquatic Science

ISSN:1727-9364|33|2|167-174

Taylor & Francis Ltd‎(2008)‎

Access to resources Favorite 11.308308

By Degen A. Allan   El-Meccawi Shaher   in Outlook on Agriculture

ISSN:0030-7270|38|4|327-335

IP Publishing Ltd‎(2009)‎

Access to resources Favorite 2.4720066