On nucleic acid structure analysis by NMR / Margaretha Maria Wilhelmina MoorenIntegrale kwaliteit van consumentenproducten: uw vraag, onze zorg / Margret MoorenTotal quality of consumer products : your demand, our concern / [Margret Mooren ; text: Unilever Research Vlaardingen ... et al. ; ill.: VeldWerk Grafisch Ontwerpbureau ... et al. ; photogr.: Unilever Research Vlaardingen ... et al.]