Back جون ادولف شيفر ARZ John Adolph Shafer Spanish John Adolph Shafer French Шефер, Джон Адольф Russian
John Adolph Shafer (February 23, 1863 – February 1, 1918) was an American botanist.
John Adolph Shafer (February 23, 1863 – February 1, 1918) was an American botanist.