C.M. Duffus Seeds and thier uses - Chichester John Wiley & Sons 1980 - 154p C.M. Duffus & J.C. Slaughter: Seeds and thier uses. Chichester. John Wiley & Sons, 1980. 0-471-27798-3--(631.521DUF) ENGLISH ISBN: 0-471-27798-3 Dewey Class. No.: 631.521 / DUF