共 50 条
- [4] Apparatus for measuring hydrogen-ion concentration of the soil INDUSTRIAL AND ENGINEERING CHEMISTRY, 1928, 20 (01): : 421 - 423
- [8] The hydrogen-ion concentration of tissue growth in vitro BULLETIN OF THE JOHNS HOPKINS HOSPITAL, 1922, 33 : 112 - 116
- [10] Some remarks on the determination of the hydrogen-ion concentration of the soil RECUEIL DES TRAVAUX CHIMIQUES DES PAYS-BAS, 1924, 43 : 434 - 446