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1.	Image from Google Jackets	Planning for nature conservation / D. R. Helliwell by Helliwell, D. R Series: Applied ecology and natural resources management Material type: Text Availability: Items available for loan: UOE Main Library (4)Call number: QH77.G7 .H4 1985, ... Place hold Save to lists
2.	Image from Google Jackets	Options in forestry : a review of literature on the effects of different tree species and silvicultural systems on soil, flora, fauna, visual amenity, and timber production / D.R. Helliwell. by Helliwell, D. R. (Denis Rodney) Material type: Text Publication details: Chichester : Philadelphia, Pa. : Packard Pub. ; Distributed by International Ideas Inc., c1982 Availability: Items available for loan: UOE Main Library (1)Call number: SD391 .H46 1982. Place hold Save to lists
3.	Image from Google Jackets	Economics of Woodland Management / D.R.Helliwell by Helliwell, D.R Material type: Text Publication details: Chichester : Packard Publishing Limited, c1988 Availability: Items available for loan: UOE Main Library (2)Call number: SD414.G7 H45 1988, ... Place hold Save to lists

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