TY - JOUR AU - Susan Tai AU - Richard Christensen AU - Lane Sander AU - Michael Welch C2 - Fresenius Journal of Analytical Chemistry DA - 1997-02-01 LA - en M1 - 357 PB - Fresenius Journal of Analytical Chemistry PY - 1997 TI - The Certification of Morphine-3-β-D-Glucuronide in a Human Urine Standard Reference Material ER -