SEARCH Articles Figures Tables Additional sources of further information Appendix further information on sutures For Further Information Further additional information Further information 3.1 The phase rule Further information 3.2 Measures of concentration Further information 4.2 The pH of an amphiprotic salt solution Further information 9.1 A justification of the Schrodinger equation Further information 9.3 The Pauli principle Further information and advice Future trends and further information Future trends and sources of further information References and sources of further information Sources for further information Sources of further information Sources of further information and advice Sources of further information and recommendations