Mary Jones books in order
6 books in the catalogue, about 49 hours of reading in all; the shortest takes 3 hours and the longest 12 hours.
6 standalone books in the catalogue.
Standalone books
Biology for CSEC 7.5 h 
Cambridge Checkpoint Science Coursebook 9 3.5 h 
Cambridge IGCSE® Combined and Co-ordinated Sciences Coursebook with CD-ROM 12.5 h 
Cambridge International AS and a Level Biology Practical Workbook 5.1 h Cambridge International AS and a Level Biology Coursebook with Digital Access 12.0 h 
Cambridge IGCSE™ Biology Coursebook with Digital Access 8.8 h