Drainage
Welsh Soils Discussion GroupMeeting1970Bangor.
Hornung, Michael.
Welsh Soils Discussion GroupMeeting1971Aberystwyth.
Welsh Plant Breeding Station.
Aberystwyth Welsh Plant Breeding Station
1971
Papers from meetings of the Group held at Bangor in 1970 and at Aberystwyth in 1971
Includes bibliographies
Drainage