WILLIAMS , C. N / UZO , J . O / PEREGRINE , W .T .H . VEGETABLE PRODUCTION C . N . WILLIAMS / J. O . UZO / W .T . H . PEREGRINE . - ENGLAND LONGMAN GROUP LTD. 1985 - viii, 179p.;ill.: Hbk ISBN: 0582775191 LC Class. No.: SB323.W5 1985