1541
1542
1543
1544
1545
1546
Published: 1977
Superior document: Arquivos de zoologia 29,1
1547
Published: 1992
Superior document: Studi e testi / Biblioteca Apostolica Vaticana 345
1548
1549
Published: 1923
Superior document: Publications of the Astronomical Observatory of the University of Michigan 3,[12]
1550
Published: 1916
Superior document: Publications of the Astronomical Observatory of the University of Michigan 2,[11]
1551
Published: 1926
Superior document: Contributions to a knowledge of inheritance in mammals 3
1552
Published: 1903
Superior document: Transactions of the Texas Academy of Science 5,[4]
1553
Published: 1914
Superior document: Bulletin of the Philosophical Society : Scientific series 1,21
1554
Published: 1904
Superior document: The decennial publications of the University of Chicago 1. Ser., 10,2
1555
Published: 1986
Superior document: Educational leaflet / the University of the State of New York, the State Education Department, New York State Museum and Science Service 27
1556
1557
1558
Published: 1998
Superior document: Naselenite mesta vo Egejska Makedonija 1 (1998)
1559
Published: 1911
Superior document: University of Toronto studies : Biological series 9
1560