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On the future of Analytical Embryology. On references for Holtfreter's chapter.
Comments for the manuscript of 'Analysis of Development'.
On the correction of the manuscript.
Typewritten letter, 1 page
Handwritten letter, 1 page
Agree to talk at First International Symposium on Cellular Endocrinology
Typewritten letter, 1 page
Typewritten letter, 2 pages
Typewritten letter, 1 page
Typewritten letter, 1 page
Typewritten letter, 1 page
Typewritten letter, 1 page