TY - GEN AU - Shipchandler,M AU - Soine,T O TI - Coumarins. V. Mass spectra of columbianetin and its esters SN - 0022-3549 PY - 1968///0814 KW - Coumarins KW - Spectrum Analysis N1 - Publication Type: Journal Article UR - https://doi.org/10.1002/jps.2600570504 ER -