P1073 Testun Cymraeg/Saesneg = Welsh/English text tĂȘte-bĂȘche.
Buy a copy
OBNB doesn't sell books, but you may be able to find a copy at one of these websites:
Dulliau i wlad sy'n dysgu. ISBN 1871726778. Published by Institute of Welsh Affairs in 2001. Publication and catalogue information, links to buy online and reader comments.