No further gains were achieved in the last decade of the century, during which the third- and fourth-generation cultivars replaced the original introduced cultivars.
Spent fuel generated by nuclear plants today can easily be used as fuel in fourth-generation molten-salt reactors.
Some are researching into new fourth-generation reactors, whilst others are not.
Another means of prevention is the use of third- or fourth-generation leukoreduction filters, although the efficacy of this procedure has not yet been documented.
The car looked similar to the fourth-generation model, but featured numerous suspension and drivability improvements.
A men's glee club organized in the early 1920s is still in existence, with third- and even fourth-generation members.
This will allow the new company to use the available frequencies for the construction of fourth-generation networks.
Many of the owners are third- or fourth-generation descendants of the original miners.
