Pen, L. J Pen, L. J
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The condition of the Kalgan River foreshores, 1992/93: Report (Report / Waterways Commission)
ISBN 9780730959991
Unknown Binding, Waterways Commission, 1994
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Managing our rivers: A guide to the nature and management of the streams of south-west Western Australia
ISBN 9780730974505
Paperback, Australia, Natural Heritage Trust, 1999
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Planning & management (River restoration)
ISBN 9780730974444
Unknown Binding, Water & Rivers Commission, 1999
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The fringing vegetation of the Wilson Inlet delta, 1946 to 1994: Report to the Wilson Inlet Management Authority (Water resource technical series)
ISBN 9780730972549
Unknown Binding, Water and Rivers Commission, 1996
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A systematic overview of environmental values of the wetlands, rivers and estuaries of the Busselton-Walpole Region (Water resource allocation and planning report series)
ISBN 9780730972884
Paperback, Water and Rivers Commission, 1997
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