https://dds.las.ac.cn/service/document?appId=a1vacbnPuv9qJRzJvdNXfsesj9JbIa6e&appKey=sPBA4vANLzjnW1k5eufEcc4k7dxfNraW&ts=1763029901667&signature=a1b162e8f27226825b1181807e4f8aaf&articleTitle=Inland+Waters+of+Southern+Africa%3A+An+Ecological+Perspective&articleAuthor=B.+R.+Allanson%2C+R.+C.+Hart%2C+J.+H.+O%E2%80%99Keeffe%2C+R.+D.+Robarts&publicationTitle=Inland+Waters+of+Southern+Africa%3A+An+Ecological+Perspective&language=&publicationType=1&publishYear=1990&isn=9789401075725&publisher=Springer+Netherlands