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Approved For Release 20000710 CERSSPED BIBLIOGRAPHY for Hartwell, John > 1. "Contingent Negative Variation as an Index of «Date: 05/78 Precognitive Information, * European Journal of Parapsychology Vol. 2 , No. 2, p. 083 2. “Contingent Negative Variation as an Index of Date: 00/79 Precognitive Information,* Research in Parapsychology 1978 No. O , p. 132 3. "An Extension to the CNV Study and an Date: 05/79 Evaluation,® , European Journal of Parapsychology Vol. 2 , No. 4 , p. 358 B-31 CLASSIFIED Approved For Release 200010 A EAS eee so0080001-2