Botanical files on Lettuce (Lactuca sativa) : on the chance for gene flow between wild and cultivated Lettuce (Lactuca sativa L. including L. serriola L., Compositae) and the generalized implications for risk-assessments on genetically modified plants / by F.T. Frietema de Vries, R. van der Meijden and W.A. Brandenburg

Botanical files on Lettuce (Lactuca sativa) : on the chance for gene flow between wild and cultivated Lettuce (Lactuca sativa L. including L. serriola L., Compositae) and the generalized implications for risk-assessments on genetically modified plants / by F.T. Frietema de Vries, R. van der Meijden and W.A. Brandenburg