13 books • 5 series
Book #2: Change of Plan
Book #2: Greene Deja Vu
Book #1: Stone Genesis
Book #2: Stone and the T-Raptors
Book #3: Stone and the Ravens
Book #2: Return to Aquarii
Book #4: Walkabout At Merta
Book #1: The Gift from Aquarii
Book #3: After Aquarii