The long-range study of the communication system in wild, free-ranging ungulates was continued from May 19 to September 10, 1973 as planned. Project Number 124.
"A Comparative Study of Communications in Big Game,"
Jackson Hole Research Station Annual Report: Vol. 1973
, Article 2.
Available at: http://repository.uwyo.edu/jhrs_reports/vol1973/iss1/2