Published in Journal of The Arnold Arboretum, in 1949, in volume 30, issue 1, pages 1-9
Published in Journal of The Arnold Arboretum, in 1949, in volume 30, issue 1, pages 10-38
Published in Journal of The Arnold Arboretum, in 1949, in volume 30, issue 1, pages 39-63
Published in Journal of The Arnold Arboretum, in 1949, in volume 30, issue 1, pages 64-70
Published in Journal of The Arnold Arboretum, in 1949, in volume 30, issue 1, pages 71-74
Published in Journal of The Arnold Arboretum, in 1949, in volume 30, issue 2, pages 139-165
Published in Journal of The Arnold Arboretum, in 1949, in volume 30, issue 2, pages 187-210
Published in Journal of The Arnold Arboretum, in 1949, in volume 30, issue 3, pages 211-226
Published in Journal of The Arnold Arboretum, in 1949, in volume 30, issue 3, pages 227-230
Published in Journal of The Arnold Arboretum, in 1949, in volume 30, issue 3, pages 231-232
Published in Journal of The Arnold Arboretum, in 1949, in volume 30, issue 4, pages 345-347
Published in Journal of The Arnold Arboretum, in 1949, in volume 30, issue 4, pages 443-449
Published in Journal of The Arnold Arboretum, in 1949, in volume 30, issue 4, pages 450-453
Published in Journal of The Arnold Arboretum, in 1949, in volume 30, issue 4, pages 454-455
Published in Journal of The Arnold Arboretum, in 1949, in volume 30, issue 4, pages 456
Published in Journal of The Arnold Arboretum, in 1949, in volume 30, issue 4, pages 457-468
Published in Journal of the Arnold Arboretum, in 1949, in volume 30, pages 233-344
Published in Journal of the Arnold Arboretum, in 1949, in volume 30, pages 348-387
Published in Journal of the Arnold Arboretum, in 1949, in volume 30, pages 388-424
Published in Journal of the Arnold Arboretum, in 1949, in volume 30, pages 433-442
Published in Journal of the Arnold Arboretum, in 1949, in volume 30, pages 111-138
Published in Journal of the Arnold Arboretum, in 1949, in volume 30, pages 166-186
Published in Journal of the Arnold Arboretum, in 1949, in volume 30, pages 75-84
Published in Journal of the Arnold Arboretum, in 1949, in volume 30, pages 425-432