مؤلف غير معروف(Corvallis, Or. : Agricultural Experiment Station, Oregon State University, in cooperation with Agricultural Research--SEA, USDA, 2013-10-16)
مؤلف غير معروف(U.S. Environmental Protection Agency, Office of Research and Development, National Health and Environmental Effects Laboratory, 2013-10-16)
مؤلف غير معروف(Corvallis, Or., USA : Agricultural Experiment Station, International Plant Protection Center, and Dept. of Agricultural and Resource Economics, Oregon State University, 2013-10-16)