Book of primeval naturePirrus, Enn-AavoGeology and mineral resources of Estonia1997 / p. 375-377: ill

CambrianMens, Kaisa; Pirrus, Enn-AavoGeology and mineral resources of Estonia1997 / p. 39-51: ill

ClayPirrus, Enn-AavoGeology and mineral resources of Estonia1997 / p. 360-364: ill

VendianMens, Kaisa; Pirrus, Enn-AavoGeology and mineral resources of Estonia1997 / p. 35-38: ill

Vendian-Tremadoc clastogenic sedimentation basinsMens, Kaisa; Pirrus, Enn-AavoGeology and mineral resources of Estonia1997 / p. 184-191: ill