TY - BOOK AU - Straelen VV TI - Microstructure of the dinosaurian egg-shells from the cretaceous beds of Mongolia U1 - 560.8 PY - 1925/// CY - New York PB - American Museum of Natural History KW - Dinosaurian egg-shells KW - Paleontology N1 - Published in American museum novitates of the American Museum of Natural History ER -