Rhif y cyhoeddwr = Publisher's number: SCHO0906BLLY-B-P.
Arolwg holiadur ynghylch defnyddio bio-hygyrchedd 'Mewn Llestr' wrth asesu risg i iechyd dynol. Published by Asiantaeth yr Amgylchedd in 2006. Publication and catalogue information, links to buy online and reader comments.