2008 journal article
Infestation Rate of Hemlock Woolly Adelgid (Hemiptera: Adelgidae) Among Three North American Hemlock (Tsuga) Species Following Artificial Inoculation
JOURNAL OF ENTOMOLOGICAL SCIENCE, 43(4), 438β442.
By: R. Jetton n, F. Hain n, W. Dvorak n & J. Frampton n