Media type: E-Article Title: Natural-Abundance C<sup>13</sup> Nuclear Magnetic Resonance Spectra of Medium-Molecular-Weight Organic Compounds Contributor: Weigert, Frank J.; Jautelat, Manfred; Roberts, John D. imprint: National Academy of Sciences of the United States of America, 1968 Published in: Proceedings of the National Academy of Sciences of the United States of America Language: English ISSN: 0027-8424 Origination: Footnote: Access State: Open Access