Ten booklets in a folder in a plastic envelope.
Mannau arbennig by Cynllun y Cyngor Ysgolion, y Gymraeg fel Iaith Gyntaf yn yr Ysgol Gynradd. ISBN 0850884616. Published by Gwasg Gomer ar ran y Cyngor Ysgolion in 1976. Publication and catalogue information, links to buy online and reader comments.