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Science, New Series, Vol. 110, No. 2857, Sep. 30, 1949


Previous Issue: New Series, Vol. 110, No. 2856, Sep. 23, 1949
Next Issue: New Series, Vol. 110, No. 2858, Oct. 7, 1949


The Meaning and Limits of Exact Science, pp. 319-327
Max Planck


Technical Papers
Preparation of Radioautographs of Tissues without Loss of Water-Soluble P32, pp. 328-329
Margaret W. Holt; Russell F. Cowing; Shields Warren
On the Relationship of Blood Group A to Rh Immunization and the Occurrence of Hemolytic Disease of the Newborn, pp. 329-330
S. P. Lucia; Marjorie L. Hunt; John C. Talbot
Strontianite and Witherite Associated with Southern Illinois Fluorite, p. 331
O. R. Grawe; M. P. Nackowski
Grignard Coupling at High Temperatures, p. 332
Amos Turk; Marvin P. Zimmerman; Robert Mavis
The Preparation of Formaldehyde-C14, p. 332
A. Russell Jones; Walter J. Skraba
Determination of the Fate of Calcium in the Laying Hen by means of Radiocalcium (Ca45), pp. 332-333
J. W. T. Spinks; M. R. Berlie; J. B. O'Neil
Serologic Relationships of Mumps and Newcastle Disease, pp. 333-334
Erwin Jungherr; Roy E. Luginbuhl; Lawrence Kilham


Comments and Communications
Method for Isolation of Actinomyces israeli from Dento-Bacterial Plaque, pp. 334-335
J. Ennever; Hamilton B. G. Robinson; Paul C. Kitchin
Statement on Visa Action, p. 335
M. Demerec


News and Notes, pp. 335-338

Previous Issue: New Series, Vol. 110, No. 2856, Sep. 23, 1949
Next Issue: New Series, Vol. 110, No. 2858, Oct. 7, 1949



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