Has anybody read these books & are they any good?

[ringtail]

Anybody know if these R.J. Archer books any good, worth reading?

(Seeds of Civilization series of 3)

Tractrix, ISBN 978-0977910908
Tsubute, ISBN 978-0977910915
Triangle, ISBN 978-0977910939

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(Parallel Ops series of 4, follows up the above series)

The Informants, ISBN 978-0977910960
The Scientists, ISBN 978-0977910946
The Guardians, ISBN 978-0977910984
The Teacher, not out yet
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[MagnusTheBrewer]

Looks interesting, I'll give them a try.