共 50 条
- [41] Regulations and practices of recycling in NATO countries - B - Canada and United States of America FRONTIERS IN THE SCIENCE AND TECHNOLOGY OF POLYMER RECYCLING, 1998, 351 : 29 - 39
- [44] Survey of current vitamin D food fortification practices in the United States and Canada JOURNAL OF STEROID BIOCHEMISTRY AND MOLECULAR BIOLOGY, 2013, 136 : 211 - 213
- [50] Snakes of the United States and Canada TLS-THE TIMES LITERARY SUPPLEMENT, 2003, (5242): : 27 - 27