[ 128 ] Eric W. Martin and E. Fullerton Cook, editors, Remington's practice of pharmacy, 11th ed., Easton, Pennsylvania, 1956, p. 286.
[ 129 ] Letter from Owen H. Waller, editor of The Chemist and Druggist, to George Griffenhagen, January 15, 1957.
[ 128 ] Eric W. Martin and E. Fullerton Cook, editors, Remington's practice of pharmacy, 11th ed., Easton, Pennsylvania, 1956, p. 286.
[ 129 ] Letter from Owen H. Waller, editor of The Chemist and Druggist, to George Griffenhagen, January 15, 1957.