pH measurements : their theory and practice by Gold Victor

Electrometric pH determination : theory and practice by Bates, Roger G.

Hydrochemistry in low-pH-soils of South Norway by Braekke, Finn H.

Indian standard: methods of sampling and test ( Physical and chemical ) for water used in industry

Subjects: “…pH value, Total solids, electrical conductance…”

Handbook of Soil,Water and Plant Analysis by Seenappa, C; Kalaynamurthy,K,N; Anand, M.R; Vikramarjun, Madam

Subjects: “…Soil Analysis; Soil pH; Plant Analysis;…”

Animal memory

Subjects:

Soil pH, inoculation vis-a-vis nodulation, Nitrogen fixation and assimilation in relation to growth in Albizia lebbeck, Benth by Chauhan, Yogendera Singh

Subjects:

A handbook on soil analysis by Thakur, Risikesh; Shrivastava, Atul kumar; Sharma, G.D.; Dwivedi, B.S

Subjects: “…Determination of soil pH and electrical conductivity; Estimation of available phosphorus in soil;…”

A handbook on soil analysis by Thakur, Risikesh; Shrivastava, Atul kumar; Sharma, G.D.; Dwivedi, B.S

Subjects: “…Determination of soil pH and electrical conductivity; Estimation of available phosphorus in soil;…”

Tree surgery by Bridgeman, P. H.

Business dictionary by Collin, P.H

Dictionary of printing and publishing by Collin, P.H

Investors encyclopedia

PH and electro titrations: the colorimetric and potentiometric determination of pH. Potentiometry, conductometry, and voltammetry (polarography).... by Kolthoff, I.M

The genus Epilobium Himalayan region by Raven, P.H

Unit processes in organic synthesis

Principles of angiosperm taxonomy by Davis, P.H