Randolph Hambling

History and distribution of steepland gullies in response to land use change, East Coast Region, North Island, New Zealand

M. Marden, G. Arnold, Antoinette Seymour, 2012 .

Gully erosion and sediment load: Waipaoa, Waiapu and Uawa rivers, eastern North Island, New Zealand

H. Betts, M. Marden, G. Arnold, 2008 .