ctions-1/index.html">  15.  2/9 Implementing Abstractions, Part I </a>
                
                  <a class="dropdown-item" href="../16-implementing-abstractions-2/index.html">  16.  2/11 Implementing Abstractions, Part II </a>
                
                  <a class="dropdown-item" href="../17-hashing-1/index.html">  17.  2/14 Hashing, Part I </a>
                
                  <a class="dropdown-item" href="../18-ethics/index.html">  18.  2/16 Applied Ethics </a>
                
          