Published in Journal of the Arnold Arboretum, in 1975, in volume 56, pages 103-125
Published in Journal of the Arnold Arboretum, in 1975, in volume 56, pages 223-239
Published in Journal of the Arnold Arboretum, in 1975, in volume 56, pages 248-255
Published in Journal of the Arnold Arboretum, in 1975, in volume 56, pages 265-335
Published in Journal of the Arnold Arboretum, in 1975, in volume 56, pages 375-397
Published in Journal of the Arnold Arboretum, in 1975, in volume 56, pages 398-412
Published in Journal of the Arnold Arboretum, in 1975, in volume 56, pages 413-426
Published in Journal of the Arnold Arboretum, in 1975, in volume 56, pages 456-465
Published in Journal of The Arnold Arboretum, in 1975, in volume 56, issue 1, pages 1-19
Published in Journal of The Arnold Arboretum, in 1975, in volume 56, issue 1, pages 20-102
Published in Journal of The Arnold Arboretum, in 1975, in volume 56, issue 1, pages 126-163
Published in Journal of The Arnold Arboretum, in 1975, in volume 56, issue 1, pages 164-170
Published in Journal of The Arnold Arboretum, in 1975, in volume 56, issue 2, pages 185-210
Published in Journal of The Arnold Arboretum, in 1975, in volume 56, issue 2, pages 240-242
Published in Journal of The Arnold Arboretum, in 1975, in volume 56, issue 2, pages 243-247
Published in Journal of The Arnold Arboretum, in 1975, in volume 56, issue 2, pages 256-263
Published in Journal of The Arnold Arboretum, in 1975, in volume 56, issue 2, pages 264
Published in Journal of The Arnold Arboretum, in 1975, in volume 56, issue 3, pages 336-363
Published in Journal of The Arnold Arboretum, in 1975, in volume 56, issue 3, pages 364-368
Published in Journal of The Arnold Arboretum, in 1975, in volume 56, issue 3, pages 369-373
Published in Journal of The Arnold Arboretum, in 1975, in volume 56, issue 4, pages 427-448
Published in Journal of The Arnold Arboretum, in 1975, in volume 56, issue 4, pages 449-455