Electronic Resource
[s.l.]
:
Nature Publishing Group
Nature
180 (1957), S. 1042-1043
ISSN:
1476-4687
Source:
Nature Archives 1869 - 2009
Topics:
Biology
,
Chemistry and Pharmacology
,
Medicine
,
Natural Sciences in General
,
Physics
Notes:
[Auszug] The figures Droop uses for concentrations of vitamin B12 in ocean waters are those of Cowey1 ; but reference to Cowey's paper shows that they were obtained after subjecting filtered water to an extraction procedure in which the first stage is heating with cyanide. This procedure would be expected2 ...
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1038/1801042a0
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