This is a pro-choice book about women who go to get abortions in one abortion clinic that the author observes. She interviews clinic staff and discusses the reasons women get abortions. A little biased, but still interesting to read. Really gives a glimpse of what abortion clinics are like.
Other books that are good: A Year on Abortion's Front Line by Sue Hertz This is about a clinic and has interviews with clinic personell and well as activists on both sides. A great unbiased book.
Lovejoy: A Year in the Life of an Abortion Clinic by Peter Korn. Also an excellent unbiased book focusing on the everyday workings of an abortion clinic.
Or Abortion at Work: Ideology and Practice in a Feminist Clinic by Wendy Simonds. She is a pro-choice feminist who shows her bias, but the book is nonetheless excellent and features many interviews with clinic staff on various topics, everything from dealing with picketers to facing the remains of aborted fetuses. It is graphic at times but always honest.
These three books are a bit better, but Moments on Maple Avenue is still interesting.