2 books in series

Crisis on Conshelf Ten

Crisis on Conshelf Ten is a 2-book series with 2 primary works first released in 1975 with contributions by Monica Hughes.

#1
Crisis on Conshelf Ten

#1 of 2 in Crisis on Conshelf Ten

1975 • 2 Readers • 143 pages

#2
Earthdark

#2 of 2 in Crisis on Conshelf Ten

1977 • 122 pages