"O" Level Passbook (Key Facts)
by Professor Richard Knowles
ISBN 13: 9780850975970
Format: Paperback (224 pages) Publisher: Letts Educational Published: 01 Dec 1982 Other Format: Paperback
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Wonder of Genetics
by Richard Knowles
ISBN 13: 9781616142148
Format: Hardcover (337 pages) Publisher: Prometheus Published: 15 Oct 2010