共 50 条
- [1] ESTIMATION OF HYDROGEN-ION CONCENTRATION NEW ENGLAND JOURNAL OF MEDICINE, 1973, 288 (17): : 915 - 915
- [4] REPORT ON HYDROGEN-ION CONCENTRATION OF SOILS JOURNAL OF THE ASSOCIATION OF OFFICIAL AGRICULTURAL CHEMISTS, 1951, 34 (03): : 588 - 589
- [8] The hydrogen-ion concentration of the semen of the bull JOURNAL OF AGRICULTURAL SCIENCE, 1942, 32 : 298 - 307