http://www.learningcommons.org/bookmarks/categories/engines DLC Bookmarks: engines http://www.learningcommons.org/bookmarks/view/2269 http://www.learningcommons.org/bookmarks/view/2269 <p class="bookmark_author">By: <a href="http://www.learningcommons.org/bookmarks/jthardy">John Hardy</a></p><p>Great site on cryogenic engines</p><p class="bookmark_categories">Categories: <a href="http://www.learningcommons.org/bookmarks/categories/cryogenics">cryogenics</a> <a href="http://www.learningcommons.org/bookmarks/categories/engines">engines</a> <a href="http://www.learningcommons.org/bookmarks/categories/rocketry">rocketry</a></p> Thu May 15 16:37:53 -0700 2008