Hitchcock, C.H. (1871). [Account and complete list of the Ichnozoa of the Connecticut Valley.] Walling and Gray's Official Topographic Atlas of Massachusetts, pp. xx-xxi.
243427
Hitchcock, C.H.
1871
[Account and complete list of the Ichnozoa of the Connecticut Valley.] Walling and Gray's Official Topographic Atlas of Massachusetts, pp. xx-xxi.