共 7 条
- [1] AUERBACH F, 1924, Z UNTERSUCHUNG NAHRU, V48, P272
- [3] GAWEHN K, 1970, Z ANAL CHEM FRESENIU, V252, P222
- [4] Lampitt L. H., 1930, ANALYST, V55, P666
- [6] WERNER W, 1970, Z ANAL CHEM FRESENIU, V252, P224
- [7] WHITE J W JR, 1967, Journal of Apicultural Research, V6, P69