Child welfare work in California; a study of agencies and institutions
by
Slingerland, William H. (William Henry), 1854-1924
series:
Unknown
first published:
Unknown
Appropriations expended, results reached, and present condition of the work of the Astrophysical observatory
by
Langley, S. P. (Samuel Pierpont), 1834-1906
series:
Unknown
first published:
Unknown
Summary of child welfare work in Pennsylvania
by
Hart, Hastings H. (Hastings Hornell), 1851-1932
series:
Unknown
first published:
Unknown
Child welfare work in Pennsylvania; a co-operative study of child-helping agencies and instututions
by
Slingerland, William H. (William Henry), 1854-1924
series:
Unknown
first published:
Unknown
Animal locomotion : the Muybridge work at the University of Pennsylvania : the method and the result
by
university of pennsylvania
series:
Unknown
first published:
Unknown
Child-welfare conditions and resources in seven Pennsylvania counties
by
Deardorff, Neva R. (Neva Ruth), 1887-1958
series:
Unknown
first published:
Unknown
Child welfare work in California; a study of agencies and institutions
by
Slingerland, William H. (William Henry), 1854-1924
series:
Unknown
first published:
Unknown
Child welfare work in Pennsylvania; a co-operative study of child-helping agencies and institutions
by
Slingerland, William H. (William Henry), 1854-1924
series:
Unknown
first published:
Unknown
Animal mechanism: a treatise on terrestrial and aërial locomotion
by
Marey, Etienne-Jules, 1830-1904
series:
Unknown
first published:
Unknown