Colonists by Geoff O'Callaghan - Sci Fi - About early settlers on Mars.  One of their colonist transports loses all the adult colonists, and the crew of Mars Base must care for eleven orphans of various ages.  They choose to train the kids as part of the crew, combining schooling with work. We see the youngsters growing in experience and character.  When crooked members of an industrial conglomerate try to take over Mars, it is the orphans who save the day. - pdf, format 8)