asked the Secretary of State for Education and Science what books of reference are used by his Department to guide those planning and designing new buildings, and major adaptations to existing buildings, on the needs of the visually handicapped, the hearing-impaired and the mentally handicapped.

Guidance is given in the Department's design note No. 10 on all aspects of designing schools for mentally handicapped pupils and, in design note No. 25, which has an extensive specialist bibliography, on lighting and acoustic criteria for the visually handicapped and hearing-impaired. Guidance is in preparation on space standards for these latter two groups. Copies of the two design notes are being sent to the hon. Member and are available in the Libraries.