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0001564590-20-029360-index-headers.html | 2020-06-15 16:16:24 | |
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0001564590-20-029360.txt | 2020-06-15 16:16:24 | |
hes-11k_20191231.htm | 324190 | 2020-06-15 16:16:24 |
hes-ex231_6.htm | 3610 | 2020-06-15 16:16:24 |