| ການຂຽນກ່າວອ້າງ | Walker, P.A., 1998. Fleeting images. Dynamics of North Sea ray populations. University of Amsterdam. 145 p. Ph.D. dissertation. |
| DOI / ISBN | |
| ເຈ້ຍ URL | |
| Ref. No. | 41305 |
| ພາສາ | English |
| ການນຳໃຊ້ | not seen |
| ຂໍ້ສັງເກດ | |
| ຊອກເອກະສານອ້າງອີງນີ້ໃນ | Google Scholar | Scirus | Species used from this reference |