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67. Suggestions for a program for the care of the chronically ill in Essex County: memorandum submitted to Essex County Committee for the Care of the Chronically Ill (composed of representatives of Newark, Orange and Montclair Councils of Social Agencies)

68. Fluorine and its compounds: fluorine, hydrofluoric acid, sodium fluoride, silicon fluoride, cryolite, ammonium bifluoride antimony, antimony hydride : general information, industrial health aspects, industries and occupations, selected abstracts, selected references

69. Basophilic aggregation test for lead absorption and lead poisoning : introduction, preparation of slides, preparation of blood smear, fixation of one-half of the smear, staining the smear, basophilic aggregation counting, intrepretation of results

70. Lead and its compounds: lead, lead carbonate, basic, litharge, white lead, sublimed, lead arsenate, lead sulfide, tetraethyl lead, orange mineral : general information, industrial health aspects, industries and occupations, selected abstracts, selected references