GUEST EDITORIAL
Recent studies on endemic fluorosis in China
  Jianxue Li, Shouren Cao,
  China ... 125-128

ANNOUNCEMENTS ... 128

RESEARCH REPORTS
Further esr spectrum studies of the influence of fluoride on the human erythrocyte membrane
  YinYang Wang, Xiaojie Li,
  Wenjuan Xin, China ... 129-135

Effect of nutrition supplementation during the annual dry grass season on tooth wear in industry-fluorosed. Goats
  Jundong Wang, Jianhua Hong,
  Jinxi Li, Jianping Cai,
  China ... 136-140

Fluoride content in water, urine and egg shells as indicators of environmental contamination
  W Czarnowski, K Wrzesniowska,
  J Krechniak, Poland ... 141-144

Effect of calcium content in -lactalbumin molecule on the interaction of this protein with fluoride ions
  P Wieczorek, D Samujlo, Z Machoy,
  Poland ... 145-150

Fluoride incorporation into fetal bone
  S Mokrzynski, Z Machoy,
  Poland ... 151-154

Effect of long-term administration of fluoride on levels of protein, free amino acids and rna in rabbit brain
  A Shashi, JP Singh, SP Thapar, India ... 155-159

ABSTRACTS FROM CHINA
Fluorosis and the tea-drinking habit among Kazaks in Xinjiang.
Lian-Fang Wang et al, China ... 160

Effectiveness of endemic fluorosis control for 8 years by defluoridation to improve drinking water quality...
  De-Lang Cheng et al, China ... 160

Analysis of bone mineral content in cases of endemic skeletal fluorosis of different roentgen ray types
  Jian-Yin Tian et al, China ... 161

An investigation into the fluoride levels of drinking water and the condition of fluorosis in some areas of South Xinjiang
  Jian-Pin Wang, Chen-Zhong Yang et al,
  China ... 161

ABSTRACTS
Endemic fluorosis of the skeleton: radiographic features in 127 patients.
  YZ Wang et al, USA ... 162

Appropriate uses of fluorides for children .Current Recommendations.
  DC Clark, Canada ... 162-163

Acute fluoride poisoning from a public water system
  BD Gessner et al, USA ... 163-164

Psychopharmacology of fluoride: a review
  B Spittle, New Zealand ... 164

Isolation, characterization and epistasis of fluoride-resistant mutants of Caenorhabditis Elegans.
  I Katsura et al, Japan ... 165

Effect of intermittent delivery of fluoride to solution on root hard-tissue de- and remineralization measured

By I-125 absorptiometry.
  H Almqvist, F Lagerlof,
  Sweden ... 165-166

Experiments on the initiation of calcium fluoride formation with reference to the solubility of dental enamel and brushite.
MJ Larsen, SJ Jensen,
  Denmark ... 166

Ionic and nonionic fluoride levels in blood of dialyzed and undialyzed patients with renal failure and kidney transplanted patients.
  T Kimura et al, Japan ... 167

Clinical trial of fluoride therapy in postmenopausal osteoporotic women - extended observations and additional analysis.
  BL Riggs et al, USA ... 167-168

Fluoride pharmacokinetics in infancy.
  J Ekstrand et al, USA ... 168

Distribution profiles of fluoride in 3 different kinds of rat bones.
  J Li et al,
  Japan, England ... 169

Effect of mouthwashes of variable NAF concentration but constant NaF content on oral fluoride retention.
  RM Duckworth, D Stewart,
  England ... 169-170

Fluoride-induced developmental changes in enamel and dentine of european roe deer (capreolus capreolus l) as a result of environmental pollution.
  U Kierdorf et al,
  Germany, Denmark ... 170

Site-specific differences in the salivary concentrations of substances in the oral cavity - implications for the aetiology of oral disease and local drug delivery
  JA Weatherell et al, England ... 171

The mechanism of fluoride-induced hypocalcaemia
  ABTJ Boink et al, Netherlands ... 171

The effect of honey on human tooth enamel invitro observed by electron microscopy and microhardness measurements
  SR Grobler et al, South Africa ... 172

Slow-release sodium fluoride in the management of postmenopausal osteoporosis - a randomized controlled trial.
  CYC Pak et al, USA ... 172-173

Normal age-related changes in fluoride content of vertebral trabecular bone - relation to bone quality
  A Richards et al, Denmark ... 173

DISCUSSION
  Jenkins and Colquhoun continued ... 174-179