Horticultural economics and marketing : 23rd International Horticultural Congress, Florence, Italy, August 27- September 1, 1990 / conveners and ed. M. van de[r] Schilden, P. van Lookeren Campagne
"Horticultural economics and marketing : 23rd International Horticultural Congress, Florence, Italy, August 27- September 1, 1990 / conveners and ed. M. van de[r] Schilden, P. van Lookeren Campagne"