Based on The conservation and utilisation of maize silage, published in 1975, with 2nd ed. in 1977. Updated in 1985 with title: Maize silage : production, conservation, utilisation.
Maize : producing and feeding maize silage by J. M. Wilkinson. ISBN 0948617365. Published by Chalcombe in 1998. Publication and catalogue information, links to buy online and reader comments.