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- [5] THE POTENTIOMETRIC TITRATION OF ALUMINUM AND GALLIUM WITH TETRAPHENYLBORATE FRESENIUS ZEITSCHRIFT FUR ANALYTISCHE CHEMIE, 1988, 332 (04): : 369 - 369
- [8] THE SOLUBLE CONTRACEPTIVE BENZALKONIUM CHLORIDE FOIL - PRELIMINARY-RESULTS CONTRACEPTION FERTILITE SEXUALITE, 1987, 15 (02): : 165 - 170