Published in Journal of the Arnold Arboretum, in 1978, in volume 59, pages 197-248
Published in Journal of the Arnold Arboretum, in 1978, in volume 59, pages 311-341
Published in Journal of The Arnold Arboretum, in 1978, in volume 59, issue 1, pages 1-31
Published in Journal of The Arnold Arboretum, in 1978, in volume 59, issue 1, pages 32-49
Published in Journal of The Arnold Arboretum, in 1978, in volume 59, issue 1, pages 50-67
Published in Journal of The Arnold Arboretum, in 1978, in volume 59, issue 1, pages 68-73
Published in Journal of The Arnold Arboretum, in 1978, in volume 59, issue 2, pages 105-128
Published in Journal of The Arnold Arboretum, in 1978, in volume 59, issue 2, pages 129-155
Published in Journal of The Arnold Arboretum, in 1978, in volume 59, issue 2, pages 192-196
Published in Journal of the Arnold Arboretum, in 1978, in volume 59, issue 3, pages 249-273
Published in Journal of The Arnold Arboretum, in 1978, in volume 59, issue 3, pages 274-297
Published in Journal of The Arnold Arboretum, in 1978, in volume 59, issue 3, pages 298
Published in Journal of The Arnold Arboretum, in 1978, in volume 59, issue 3, pages 299-309
Published in Journal of The Arnold Arboretum, in 1978, in volume 59, issue 4, pages 352-359