I read this many many years ago, probably quite close to it's initial publication date and this actually is the cover I remember from then. The second story of the Parapsychic Talent agency, this deals with the grandaughter of the founder. She's dealing with the demand on psychics from the space platform, and two teenagers who are developing skills in two different directions. They could be pivotal in the future of the world and the colonisation of earth. You can see where later ideas sprang from and how she was working out how things work with her psychics.
I liked this series when I read it before and re-reading didn't diminsh my liking for it. It's about the people involved, and while science may have changed, and the relationships with countries didn't develop how she predicted, much of the human elements remain the same.
