Along with Joe Varacalli and Michael Coulter, I had the privilege of co-editing the 3rd volume of the Encyclopedia of Catholic Social Thought, Social Science, and Social Policy. The original 2 volumes were published in 2007 (Steve Krason was the 4th co-editor of those volumes). Here are a couple of links to volume 3. https://rowman.com/ISBN/9780810882669 and http://www.amazon.com/Encyclopedia-Catholic-Social-Thought-Science/dp/0810882663/ref=pd_sim_sbs_b_1
The 3rd volume includes a number of entries on pro-life topics. For example, the volume includes entries on Dignitas Personae (authored by Father Joseph Koterski), Ectopic Pregnancy (Richard Myers), Embryo Adoption/ and or Rescue (William E. May), Eugenics (Father John Berry), Infanticide (Chris Kaczor), International Law and the Right to Life (Pierro Tozzi), Palliative Sedation (Joseph Piccione), Partial-birth Abortion (Rick Hinshaw), Persistent Vegetative State , Feeding and Hydrating Persons in (William E. May and Christian Brugger), and the Right to Life movement (Keith Cassidy).