Transcript, Dr. Bill Samuel, Author and Associate Dean, Research, Faculty of Science, University of Alberta SUBJECT: #145 White as a Ghost: Winter Ticks and Moose Audio #145 November 23, 2004 Innovatio Alberta http://www.innovationalberta.com/article.php?articleid=517 (页面存档备份,存于互联网档案馆)
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Campbell,John B., (Extension Entomologist), Thomas, Gustave D., Entomology Research Leader "Controllng Ticks" University of Nebraska Lincoln extension, Istitute of Agriculture and Natural Resources, Rev. May, 2006 存档副本. [2010-09-19]. (原始内容存档于2010-06-06).
Transcript, Dr. Bill Samuel, Author and Associate Dean, Research, Faculty of Science, University of Alberta SUBJECT: #145 White as a Ghost: Winter Ticks and Moose Audio #145 November 23, 2004 Innovatio Alberta http://www.innovationalberta.com/article.php?articleid=517 (页面存档备份,存于互联网档案馆)
Campbell,John B., (Extension Entomologist), Thomas, Gustave D., Entomology Research Leader "Controllng Ticks" University of Nebraska Lincoln extension, Istitute of Agriculture and Natural Resources, Rev. May, 2006 存档副本. [2010-09-19]. (原始内容存档于2010-06-06).