Results 101 to 110 of about 321 (175)

[Intervention to promote regulatory compliance in food and nutrition education in public basic education schools in the central region of Mexico]. [PDF]

Salud Colect
Hernández Ramírez JC.
europepmc   +1 more source

Vendian geology of Svalbard

, 1993
Harland, W.B., Hambrey, Michael J., Waddams, P.   +2 more
openaire   +1 more source

Late Precambrian bilaterians: grades and clades. [PDF]

Proc Natl Acad Sci U S A, 1994
Valentine JW.
europepmc   +1 more source

Origin of the metazoan phyla: molecular clocks confirm paleontological estimates. [PDF]

Proc Natl Acad Sci U S A, 1998
Ayala FJ, Rzhetsky A, Ayala FJ.
europepmc   +1 more source

Testing the Cambrian explosion hypothesis by using a molecular dating technique. [PDF]

Proc Natl Acad Sci U S A, 1998
Bromham L, Rambaut A, Fortey R, Cooper A, Penny D.   +4 more
europepmc   +1 more source

Bilaterians of the Precambrian-Cambrian transition and the annelid-arthropod relationship. [PDF]

Proc Natl Acad Sci U S A, 1989
Valentine JW.
europepmc   +1 more source