| ���� | �R�b�N�N���t�g�yJohn Douglas Cockcroft�z |
| �Ӗ� | �i1897-1967�j �C�M���X�̕����w�ҁB�E�H���g���ƂƂ��ɒ������d���������u���l�āC�l�H�I�ɉ��������z�q�����`�E�����q�j�ɓ��ĂāC���q�j�j��̎����ɏ��߂Đ����B |
 |  |  |  |  |
 |  |  |  |  |
 |  |  |  |  |
 |  |  |  |  |
 |  |  |  |  |
 |  |  |  |  |
 |  |  |  |  |
 |  |  | ||
 |  |  |  |  |
 | ||||
 |  |  |  |  |
 |  |  |  |  |
 |  |  |  |  |
 |  |  |  |  |
 |  |  |  |  |
 |
Tweet 
