Establishment of reentry intervals for organophosphate-treated cotton fields based on human data: I. Ethyl-and methyl parathion - Ware, G. W.; Morgan, D. P.; Estesen, Betty J.; Cahill, W. P.; Whitacre, D. M. (Springer, 1973)
http://dx.doi.org/10.1007/BF02030145
Keywords: ZP; WW-YZ