Published in Journal of the Arnold Arboretum, in 1977, in volume 58, pages 25-39

Published in Journal of the Arnold Arboretum, in 1977, in volume 58, pages 67-71.

Published in Journal of the Arnold Arboretum, in 1977, in volume 58, pages 73-108

Published in Journal of the Arnold Arboretum, in 1977, in volume 58, pages 109-145

Published in Journal of the Arnold Arboretum, in 1977, in volume 58, pages 161-170

Published in Journal of the Arnold Arboretum, in 1977, in volume 58, pages 193-208

Published in Journal of the Arnold Arboretum, in 1977, in volume 58, pages 343-348

Published in Journal of The Arnold Arboretum, in 1977, in volume 58, issue 1, pages 40-51

Published in Journal of The Arnold Arboretum, in 1977, in volume 58, issue 1, pages 60-66

Published in Journal of The Arnold Arboretum, in 1977, in volume 58, issue 2, pages 146-160

Published in Journal of The Arnold Arboretum, in 1977, in volume 58, issue 2, pages 171-181

Published in Journal of The Arnold Arboretum, in 1977, in volume 58, issue 2, pages 182-188

Published in Journal of The Arnold Arboretum, in 1977, in volume 58, issue 2, pages 189

Published in Journal of The Arnold Arboretum, in 1977, in volume 58, issue 2, pages 190-192

Published in Journal of The Arnold Arboretum, in 1977, in volume 58, issue 3, pages 209-256

Published in Journal of The Arnold Arboretum, in 1977, in volume 58, issue 3, pages 257-279

Published in Journal of The Arnold Arboretum, in 1977, in volume 58, issue 3, pages 280-306

Published in Journal of The Arnold Arboretum, in 1977, in volume 58, issue 3, pages 307-324

Published in Journal of The Arnold Arboretum, in 1977, in volume 58, issue 3, pages 325-342

Published in Journal of The Arnold Arboretum, in 1977, in volume 58, issue 4, pages 349-381

Published in Journal of The Arnold Arboretum, in 1977, in volume 58, issue 4, pages 382-415

Published in Journal of The Arnold Arboretum, in 1977, in volume 58, issue 4, pages 416-436

Published in Journal of The Arnold Arboretum, in 1977, in volume 58, issue 4, pages 437-444

Published in Journal of The Arnold Arboretum, in 1977, in volume 58, issue 4, pages 445-450