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Bosshard, Andreas 2011 Developments of hay grass seeding (direct seeding) in Switzerland. In: Conference proceedings : International conference " Using species rich semi-natural grassland to obtain seed for the restoration of degraded areas ", Agricultural faculty, Legnaro (PD, Italy) 21-22.09 2011. University of Padova : Department of Environmental Agronomy and Crop Production, [S.l.]: 58-61.