| Temel Britannica, Vol 4, p | John King, Reaching for The Sun, 1997, Cambridge University Press, Cambridge, p |
|---|---|
| David Attenborough, The Private Life of Plants, Princeton University Press, Princeton, New Jersey, p | David Attenborough, The Private Life of Plants, Princeton University Press, Princeton, New Jersey, p |
| Malcolm Wilkins, Plantwatching, New York, Facts on File Publications, 1988, p | David Attenborough, The Private Life of Plants, Princeton University Press, Princeton, New Jersey, p |
|---|---|
| David Attenborough, The Private Life of Plants, Princeton University Press, Princeton, New Jersey, p | Malcolm Wilkins, Plantwatching, New York, Facts on File Publications, 1988, p |