Thomson, D. (2002). Tools for environmental management: A practical introduction and guide. Gabriola Island: New Society Publishers.
Dyfyniad Arddull ChicagoThomson, Dixon. Tools for Environmental Management: A Practical Introduction and Guide. Gabriola Island: New Society Publishers, 2002.
Dyfyniad MLAThomson, Dixon. Tools for Environmental Management: A Practical Introduction and Guide. Gabriola Island: New Society Publishers, 2002.
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