1. Lecture notes for a speech at the Pontifical Academy of Sciences

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2. The Processive Degradation of Individual Polyribonucleotide Chains: I. Escherichia coli Ribonuclease II

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3. Lab report on the study of the polynucleotide phosphorylase enzyme

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4. Report on the Third Annual Advanced Study Institute of Molecular Biology (Spetsai, Greece)

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5. The Effect of Secondary Structure on the Template Activity of Polyribonucleotides

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6. The Polymerization of Guanosine Diphosphate by Polynucleotide Phosphorylase

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7. Letter from Maxine Singer to Marianne Grunberg-Manago

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8. The Mechanism of Action of Polynucleotide Phosphorylase

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9. Letter from Marianne Grunberg-Manago to Maxine Singer

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10. Letter from Severo Ochoa to Maxine Singer

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11. Excerpt from Volume 6 of Singer's lab notebooks

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12. Phosphorolysis of Oligoribonucleotides by Polynucleotide Phosphorylase

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13. Letter from Leon A. Heppel to Maxine Singer

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14. Letter from Severo Ochoa to Maxine Singer

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15. Letter from Leon A. Heppel to Maxine Singer

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