1. The lognormal distribution of the elements;Ahrens;Geochim. Cosmochim. Acta,1954
2. The lognormal distribution of the elements (2);Ahrens;Geochim. Cosmochim. Acta,1954
3. Lognormal-type distributions—III;Ahrens;Geochim. Cosmochim. Acta,1957
4. Lognormal-type distributions in igneous rocks—IV;Ahrens;Geochim. Cosmochim. Acta,1963
5. The geology of New York State;Broughton;New York State Mus. and Sci. Service, Geol. Survey, Map and Chart Series,1962