00311nam a2200097Ia 4500008004100000082004300041100002700084245005000111260004400161300000800205140113s9999    xx            000 0 und d  a"632.937""1976.10.18/23""(082.2)   L7"  a"Marin, Buttolo. G.B."  aNatural products and the protection of plants  a1977bElsevier Publishing Co.cNew York  a841