Bears look like textbook mammals, but hidden in their evolutionary history are two dramatic departures from the standard ...
Potential causes for change in the boron isotope composition of the oceans with time are the variations of the relative proportions of each output and long-term changes of the weathering-derived input ...
Wigner Research Centre for Physics, Institute for Solid State Physics and Optics, P.O. Box 49, Budapest H-1525, Hungary Department of Atomic Physics, Budapest University of Technology and Economics, ...
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