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1970
Ward, J. D., and W. E. McDowell. An Evaluation of Southern Pine Beetle Infestations, Great Smoky Mountains National Park in Tennessee and North Carolina. Asheville, NC: U.S. Forest Service, 1970.
1971
Barry, Patrick J., James D. Ward, and W. E. McDowell. Evaluation of Southern Pine Beetle Infestations on the Cheoah Ranger District, Nantahala National Forest, NC and Great Smoky Mountains National Park, NC and TN. U.S. Department of Agriculture , 1971.
Ward, J. D., E. T. Wilson, and W. E. McDowell. An Evaluation of Southern Pine Beetle Infestations on the Great Smoky Mountains National Park. Asheville, NC: U.S. Forest Service, 1971.
1973
Ward, J. D., E. T. Wilson, and W. E. McDowell. Status of the Balsam Woolly Aphid Adelges piceae (Ratz.) in the Southern Appalachians-1972. Asheville, NC: U.S. Forest Service, 1973.