Lawan, Mohammed Kabiru Determination of verocytotoxin producing esherichia coli at different points of interaction between abattoir and its environment in zaria, Nigeria by Mohammed Kabiru Lawan - Zaria Dept. of Vet. pub. health and preventive Med. 2015 - xxi, 691p.: ill Includes Biblographical References Subjects--Topical Terms: Abattoir and its environment LC Class. No.: SF 757.82