| 1 |
The world of spiders / by W. S. Bristowe
Revised ed. - London : Collins , 1971
|
| 2 |
Life in lakes and rivers / by T.T. Macan and E.B. Worthington
3nd ed. - London : Collins , 1990 , c1974
|
| 3 |
The sea shore / by C. M. Yonge
London : Collins , 1949
|
| 4 |
. The open sea : its natural history / by Alister Hardy ; pt. 1
The world of plankton / by Alister C. Hardy
London : Collins , 1956
|
| 5 |
. The open sea : its natural history / by Sir Alister Hardy ; Pt. 2
Fish and fisheries / Alister Hardy
London : Collins , 1959
|
| 6 |
25
The sea coast / by J. A. Steers
London : Collins , 1953
|
