Bringing up children in this atomic age is no "push-over" job. Trusting to luck, to instinct or to old-time child-rearing adages to do the trick is about like trying to grow good crops without the aid of modern scientific methods.
Jones, Alma H.
"How Do Your Children Grow?,"
Iowa Farm Science: Vol. 2
, Article 6.
Available at: https://lib.dr.iastate.edu/farmscience/vol2/iss1/6