1. Agree, F., Jr. and H. L. Haller: Wilfordine, an Insecticidal Alkaloid from Tripterygium wilfordii Hoox. J. Amer. chem. Soc. 72, 608 (1950).
2. Agree, F., Jr., M. Jacobson and H. L. Haller: An Amide Possessing Insecticidal Properties from the Roots of Erigeron affinis DC. J. org. Chemistry 10, 236 (1945).
3. Agree, F., Jr., M. Jacobson and H. L. Haller: The Structure of Affinin, the Insecticidal Amide from Erigeron of finis DC. J. org. Chemistry 10, 449 (1945).
4. Adams, R. and W. M. Whaley: The Amaroids of Quassia. I. Quassin, Isoquassin and Neoquassin. J. Amer. chem. Soc. 72, 375 (1950).
5. Aihara, T.: On the Principles of Xanthoxylum piperitum DC. I.. The Isolation of Sanshoöls and the Structure of Sanshoöl. I. J. pharmac. Soc. Japan 70, 43 (1950)