Bibliografía (7 obras)
What makes a difference
2013
Making a difference in the lives of infants and toddlers and their families
2002
U.S. onion statistics, 1960-93
1994
Transitions to kindergarten in American schools
1992
Robert Smock and the diffusion of controlled atmosphere technology in the U.S. apple industry, 1940-1960
1988
'Though many of the rich are damn'd'
1977
