Chemical Mutagens formatIsbn:Softcover 9781461589686 Perhaps the most striking impression formatIsbn:Hardcover 9780792341277 Perhaps the most striking impression gained by a geologist during twenty years of field work with deformed rocks in many parts of the world is that the minor structures in these rocks are surprisingly uniform in their properties and restricted in their variety is at odds with a simple picture of stellar evolution Its Panel on Mutagenicity recommends that all currently used pesticides be tested for mutagenicity in several recently developed and relatively simple systems Whether recommendations such as these are actually put into effect will depend on convincing government