Composition of five Apollo 11 and Apollo 12 rocks and one Apollo 11 soil and some petrogenic considerations
Apollo 11 and 12 lunar rocks and soil chemical composition, considering petrogenesis and major and trace elements abundance
Engel, A. E. J.↗
Engineering topics
Engel, A. E. J.
Publications and source records attributed to Engel, A. E. J..
Lunar rock compositions and some interpretations
Lunar rock composition difference from meteorites and terrestrial basalts, indicating complexities in solar abundances and initial earth and moon compositions
Engel, A. E. J.↗