These are the most frequently used words in this book.
africa
african
again
although
always
animals
another
bed
bones
called
came
camp
day
discovered
discovery
down
early
east
end
even
expedition
father
few
field
find
first
fossils
found
friends
gorge
great
himself
home
hominid
homo
human
johanson
kenya
kikuyu
knew
lake
later
leakey
left
letter
little
long
louis
man
mary
might
million
museum
nairobi
national
new
next
now
old
olduvai
once
own
people
recalled
research
richard
scientists
see
seemed
several
since
site
skull
small
society
species
specimens
still
stone
study
team
think
though
thought
three
time
together
told
tools
turned
two
university
wanted
weeks
white
work
wrote
years
yet
young