Yn cynnwys mynegai = Includes index.
Teitl clawr = Cover title.
Atebion ynni Cymru : cyfarwyddiadur nwyddau, gwasanaethau ac arbenigrwydd ym maes ynni adnewyddadwy = Energy answers Wales : a directory of renewable energy goods, services and expertise. Published by Welsh Development Agency in 2001. Publication and catalogue information, links to buy online and reader comments.