publisher of Arithmetic For Teacher-Training Classes.. New York. 1949 Lessons in Science.. New York. 1924 Lessons in Science.. New York. 1924 Lessons in Science.. New York. 1923 Lessons in Science.. New York. 1923 Lessons in Science.. New York. 1923 Lessons in Science.. New York. 1921 Science for Beginners.. New York. 1921 First Course in General Science.. New York. 1916 First Course in General Science.. New York. 1916 First Course in General Science.. New York. 1916
