ISSN:
1476-4687
Source:
Nature Archives 1869 - 2009
Topics:
Biology
,
Chemistry and Pharmacology
,
Medicine
,
Natural Sciences in General
,
Physics
Notes:
[Auszug] Closely graded size-fractions were prepared by repeated sedimentation or centrifuging; their size-distributions were determined by optical or electron microscopy, and the mean size d of each fraction expressed in the form d = 2wzd3/£razd2, where na is the number of particles in a small ...
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1038/1751135a0