Dimensions of ethical thought of Marx and Engels 并列题名：Dimensions of ethical thought of Marx and Engels History of the military thought of Marx and Engels 并列题名：History of the military thought of Marx and Engels Study on moral education thought of Marx and Engels Research on the religious thoughts of Marx and Engels Research on the religious thoughts of Marx and Engels. Study on the democratic thoughts of Marx and Engels Ecological justice research on ecological thought of Marx and engels Ecological justice research on ecological thought of Marx and Engels