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Seema Ahmad
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Stand Alone
![Some Results on the Structure of the [capital Sigma]↓2 Enumeration Degrees [microform]](/_next/image?url=https%3A%2F%2Fstorage.googleapis.com%2Fmenrva_img_storage%2Fcovers%2Fgenerated%2F9780315592667.jpg&w=3840&q=80)