This is the product of a lengthy research. In the preface one gets a list of audiences the author wants to reach:
People with food allergies
Researchers and journalists
This scholarly work was chosen for this syllabus by a member of the last... a journalist who practices vegetarianism at least one day a week. That one-day diet consists of whole grain cereal, a modest pour of whole milk, a banana or peaches in season, sink food all day such as grapes or cherries in season, vegetables, fruit juices and hot PG Tips tea with honey and lime juice. This approach is for health reasons, not political.
Advisory: For whatever position you have relating to Vegetarianism, best to flip open this book and begin with Page 114 -- Chapter 15, Reverence for Life. The first two paragraphs may set the tone for doing the entire 259 pages followed by a comprehensive index.
An extended review is forthcoming.