TY - BOOK ED - Nuffield Foundation. TI - Chemistry T2 - Nuffield advanced science, chemistry U1 - 540.712 23 PY - 1970/// [Reprinted 1971] CY - Harmondsworth, Eng. PB - Penguin Books KW - Chemistry -- Study and teaching (Secondary) N1 - Includes index; v. 2 (Teachers' guide Ii; topics 13 to 19)-- ER -