Barlow, Nadine G. (1990) Constraints on early events in martian history as derived from the cratering record. Journal of Geophysical Research, 95 (B9). pp. 14191-14201. ISSN 0148-0227
Trotter, Robert T. (1990) The cultural parameters of lead poisoning: a medical anthropologist's view of intervention in environmental lead exposure. Environmental Health Perspectives, 89. pp. 79-84. ISSN 1552-9924
![[up]](/style/images/multi_up.png)
Up a level