https://stores.praeclaruspress.com/doula-comforting-a-mother-in-a-birthing-pool/
Doula comforting a mother in a birthing pool - PraeclarusPress
Books on Women's Health
a motherbirthing pooldoulacomforting
https://www.wombecology.com/home/the-birthing-pool-test
WombEcology.com - The birthing pool test
The birthing pool test
birthing pooltest