Planning to become a parent is a profound experience, at times agonizing, hopeful, stressful, and joyous. Not everyone is able to become pregnant, however. When the journey to parenthood proves chal……続きを見る
著者：Roland Pressat
出版社： Taylor & Francis
発売日： 2021年03月03日
Population control requires that the birth rate equal to the death rate. If it is too low population will decline; if it is too high, population will increase. If either condition persists long enou……続きを見る
