New York Botanical Garden1906-1940North American flora
Vol. 7, pt. 1-15
v. 7, pt. 1 , v. 7, pt. 2 , v. 7, pt. 3 , v. 7, pt. 4 , v. 7, pt. 5 , v. 7, pt. 6 , v. 7, pt. 7 , v. 7, pt. 8 , v. 7, pt. 9 , v. 7, pt. 10 , v. 7, pt. 11 , v. 7, pt. 12 , v. 7, pt. 13 , v. 7, pt. 14 , v. 7, pt. 15