00277nam a2200097Ia 4500008004100000082001900041100002500060245004900085260003700134300000800171140113s9999    xx            000 0 und d  a535.82:578  L0  a"Meek, Geoffrey. A."  aPractical Electron microscopy for biologists  a1974bWiley IntersceicnecLondon  a498