| Literature DB >> 5528312 |
H L Harrison, O L Loucks, J W Mitchell, D F Parkhurst, C R Tracy, D G Watts, V J Yannacone.
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Year: 1970 PMID: 5528312 DOI: 10.1126/science.170.3957.503
Source DB: PubMed Journal: Science ISSN: 0036-8075 Impact factor: 47.728