Natural Resource Consultancy : Bryophytes of native woods : a field guide to common mosses and liverworts of Britain and Ireland's woodlands / Carol L. Crawford.
Nature Conservancy Council For Scotland : Survey of the status and distribution of the wildcat in Scotland, 1983-1987 / N. Easterbee, L.V. Hepburn and D.J. Jefferies.
Naturenet : Wildlife and Countryside Act 1981, species protection.
1
Naturforschende Geselischaft In Zurich : Die thermischen Verhaltnisse im Zürichsee zwischen 1937 und 1963 und ihre Beeinflusung durch meteorologische Faktoren : Inaugural-dissertation.