Items where Year is 1967
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Duffey, E., ed. 1967 The biotic effects of public pressures on the environment. Abbots Ripton, The Nature Conservancy, 214pp. (Monks Wood Experimental Station Symposium, 3).
Gordon, N.J. 1967 Isle of May bird observatory and field station reports for 1966. Scottish Birds, 5 (1). 6-12.