Håkansson & Wallgren 1976
Aus Offene Naturführer
Håkansson, S. & Wallgren, B. 1976: Agropyron repens (L.) Beauv., Holcus mollis L. and Agrostis gigantea Roth as weeds – some properties. In: Swed. J. agric. Res. Bd. 6, S. 109–120.
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