revert book recs

Author: malcolmbarrett

slides/raw/00-intro.qmd

@@ -88,4 +88,3 @@ img {
 ### [Causal Inference](https://www.hsph.harvard.edu/miguel-hernan/causal-inference-book/): Comprehensive text on causal inference. Free online.
 ### [The Book of Why](http://bayes.cs.ucla.edu/WHY/): Detailed, friendly intro to DAGs and causal inference. Free online.
 ### [Mastering 'Metrics](http://www.masteringmetrics.com/): Friendly introduction to IV-based methods
-### [Explanation in Causal Inference](https://global.oup.com/academic/product/explanation-in-causal-inference-9780199325870): Deep dive on causal mediation and interaction