The Global Network of Isotopes in Precipitation (GNIP) is a worldwide isotope monitoring network of hydrogen and oxygen isotopes in precipitation, initiated in 1960 by the International Atomic Energy ...
This scheme has consistently delivered the best returns in its Global - Other category across .
This scheme has consistently delivered the best returns in its Sector - Healthcare category across . This scheme has maintained a relatively low level of volatility within its Sector - Healthcare ...
Stratified random sampling - random samples are taken from within certain categories. Stratified systematic sampling - regular samples are taken from within certain categories.
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