3 check-ins using file refs.bib version 7d7abc65ff

2021-04-05
19:23
update assignment descriptions check-in: 397bfbbe4c user: jboy tags: trunk
19:23
update description of weeks check-in: ce14191f73 user: jboy tags: trunk
19:17
add readings check-in: 3d6b8f488d user: jboy tags: trunk