Mark, Jan. The Ennead / [electronic resource] / Jan Mark.. — Harmondsworth : : Puffin,, 1981, c1978.. — 252 p. ; 19 cm. — (Puffin plus).
Анотація: Colonists from a dying Earth find a new solar system similar to the one they left behind and proceed to repeat the same destructive pattern in their new environment until near disaster makes them change their living pattern.