Opinion of the Economic and Social Committee on the: - ' Proposal for a Council Directive on the marketing of seed potatoes' (consolidated version), - ' Proposal for a Council Directive on the marketing of beet seed' (consolidated version), - ' Proposal for a Council Directive on the marketing of seed of oil and fibre plants' (consolidated version), and - ' Proposal for a Council Directive on the marketing of fodder plant seed' (consolidated version).