About April Hazard Vallerand Books by April Hazard Vallerand Davis's Canadian Drug Guide for Nurses by (author) April Hazard Vallerand & Cynthia A. Sanoski Canadian Drug Guide for Nurses by (author) April Hazard Vallerand & Cynthia A. Sanoski Davis's Drug Guide for Nurses Canadian Version by (author) April Hazard Vallerand & Cynthia A. Sanoski Davis's Canadian Drug Guide for Nursesr by (author) April Hazard Vallerand & Cynthia A. Sanoski