Stewart , J.L., Shipley , C.F., Ireland , F.A., Felix , T.L., Jarrell , V.L., Jimenez Poveda , S.C. and Shikeb , D.W. 2015. Effects Of Different Applications Of Pyrethrins And Cyfluthrin, A Synthetic Pyrethroid, On Bull Reproductive Parameters. Clinical Theriogenology. 7, 1 (Mar. 2015), 27-34.