column
![](/style/images/custom/toleft.png)
![](/style/images/custom/toright.png)
1982, 3(3): 217-224.
1982, 3(3): 245-251.
1982, 3(3): 263-267.
1982, 3(3): 310-310.
1982, 3(3): 323-324.
1982, 3(3): 325-326.