The phrase "also included a third" is correct and usable in written English.
It can be used when referring to the addition of a third item or element in a list or group that has already been mentioned.
Example: "The report covered two main topics and also included a third that addressed future implications."
Alternatives: "additionally featured a third" or "also comprised a third".
(It also included a third, smaller party called Democrats 66, and, as many commentators pointed out, the colors of the three groups combined actually made brown).
But the food was very much a sideshow to this particular dinner, which also included a third Château Pétrus, this one a 1946 vintage for £9,400.
It also included a third formulation, creating a 3-period crossover design to assess the BE of 2.5, 5, and 10 mg/mL.
The original plan also included a third element, a specialized midfrequency survey telescope in Australia based around ASKAP but with 60 additional dishes.
To understand the 'susceptibility' phenomenon in rice-gall midge interaction, we also included a third independent set of compatible interactions involving Suraksha-GMB4M, for real-time PCR validation of the selected genes as described in the material and method.
This library was constructed in a manner roughly similar to the (TiO_{2} |Cu_{2} O) libraries, with the same window layer (TiO2) but different target metal oxide for the absorber layer (Co3O4) and also included a third recombination layer (MoO3).
The latest review also included a second agency, the State Office of Mental Health, whose workers care for the mentally ill.
Ms. Haïm mostly stood to conduct, and occasionally joined the ensemble on the harpsichord (the continuo group also included a second harpsichord).
But he and a Tencent executive said on Friday that the report also included a second QQ number that did not belong to Mr. Gu and that was more likely related to the attacks.
As if reminding all concerned that they could be replaced, the concert also included a second dancing choir, Vocal Adrenaline (New Directions' rival), which doubled as gospel singers for Madonna's "Like a Prayer".
He also included a second proposal, outlining both the college's organization and "specific appointments for a staff".
