EDITORIAL
Plenary Lectures of 13th ISFR Conference ... 1-3

ORIGINAL ARTICLES
Evaluation of Environmental Contamination by a Mineral Fertilizer Factory on the basis of the content of Fluoride in Vegetables
  Samujlo and Z Machoy;
  Szczecin, Poland ... 4-10

Fluoride Content of Effluent and Byproducts of an Aluminum Industry in India
  CB Patel, VK Jain and GS Pandey,
  Raipur, India ... 10-13

Wind-blown Dust from Salty Areas, a Source of Fluoride in Plants
  RS Lavado and NB Reinaudi,
  Buenos Aires, Argentina ... 14-18

Light Microscopic and Scanning Electron Microscopic Observations on Human Fetal Bones from an Endemic Fluorosis Area
  Z Chongwan, H Daijei, Z Tingzhong,
  W Cundong, Guizhou, China ... 18-22

Improved Methods for Determination of Fluoride in Biological Materials
  K Seifert, B Dominok, GW Dominok
  Cottbus, GDR ... 22-25

Fluoride in Blood and Urine in Humans Administered Fluoride and Exposed to Fluoride-polluted Air
  K Jacyszyn and A Murat,
  Wroclaw, Poland ... 26-32

ABSTRACTS
Sex Differences in Halothane Metabolism and Hepatotoxicity in a Rat Model
  JL Plummer, P de la M Hall,
  MA Jenner and MJ Cousins,
  Chapel Hill, North Carolina ... 33

Enamel Fluoride in Nursing Rats with Mothers Drinking Water with High Fluoride Concentrations
  CR Drinkard, TG Deaton, JW Bawden,
  Chapel Hill, North Carolina ... 33-34

Urinary Fluoride Excretion in Fluoride-Exposed Workers with Diminished Renal Function
  Koichi Kono, Yasuhisa Yoshida,
  Misuzu Watanabe, Yoshihisa Tanimura,
  and Toshiyuki Hirota;
  Takatsuki City, Osaka, and
  Matsuoka-cho, Fukui, Japan ... 34-35

Renal Clearance of Fluoride in Children and Adolescents
  Carl-Johan Spak, Ulla Berg,
  Jan Ekstrand, Huddinge, Sweden ... 35-36

Effects of Cortisol and Fluoride on lon-Transporting ATPase Activities in Cultured Osteoblastlike Cells
  RE Anderson, JW Kemp, WSS Jee,
  and DM Woodbury,
  Salt Lake City, Utah ... 36-37

Extended Treatment of Primary Osteoporosis by Sodium Fluoride Combined with 25 Hydroxycholecalciferol
  D Kuntz, P Marie, B Naveau,
  B Maziere, M Tubiana, A Ryckewaert,
  Paris, France ... 38-39

Risk of Myocardial Infarction in Finnish Men in Relation to Fluoride, Magnesium and Calcium Concentration in Drinking Water
  H Luoma A Aromaa, S Helminen,
  H Murtomaas, L Kiviluoto, S Punsar,
  P Knekt, Kuopio, Finland ... 39

Prevalence of Dental Caries in High and Low Fluoride Areas of Salem District, Tamilnadu, in South India
  M Rahmatulla and A Rajasekar,
  Madras, India ... 40

Experimental Osteofluorosis in the Domestic Pig: A Histomorphometric Study of Vertebrai Trabecular Bone
  J Kragstrup, A Richards, O Fejerskov,
  Aarhus, Denmark ... 41-42

Effects of Sodium Fluoride on Blastogenesis in Mice Lymphocytes, with Special Reference to the Uptake of [³H]Thymidine, [³3H]Uridine, or [³H]Leucine
  Kataoka Masayuki, Chiba, Japan ... 42

Uterine Adenylate Cyclase Activity During the Estrus Cycle and Early Progestation in the Rat: Responses to Fluoride Activation and Decidual Induction
  AM Bedairi, RB Sanders, JM Yochim,
  Lawrence, Kansas ... 43

Dental Study Upsets the Accepted Wisdom
  J Raloff, Washington, D.C ... 44-45

Mechanism of the Mutagenic Action of Fluoride
  V Ya Nikiforova, Sverdlovsk, USSR ... 45

New Evidence on Fluoridation
  John Colquhoun, Auckland, NZ ... 45-47

Fluoride in Mixed Human Saliva After Different Topical Fluoride Treatments and Possible Relation to Caries Inhibition
  C Bruun, D Lambrou MJ Larsen,
  O Fejerskov and A Thylstrup,
  Copenhagen, Denmark ... 47

Fluoride in Human Milk
  CJ Spak, LI Hardell, P De-Chateau,
  Stockholm, Sweden ... 48

BOOK REVIEW
Abstracts from Folia Medica Cracoviensia (1981) - edited by Dr. Zdzisław Mach,
  Krakow, Poland ... 49-50