Ar y clawr = On cover: North Wales Environmental Services Limited = Gwasanaeth Amgylchfyd Gogledd Cymru Cyf.
Rhif cynnig = Tender no. WHQ/21/98-9.
Rhif cytundeb = Contract no. FC 73-01-222.
A preliminary report investigating hedgerows and bats : a report to: The Countryside Council for Wales by Robert Greig. Published by Countryside Council for Wales in 1998. Publication and catalogue information, links to buy online and reader comments.