00297nam a2200121Ia 4500008004100000082001400041100002200055245002000077260003200097365000600129630002000135730002000155100415s9999    xx            000 0 und d  b3210a500  aHaslett  AW (ed.)  aScience News 31  aENGLANDc1948bSCIENCE NEWS  b0  aScience News 31  aScience News 31