The seasonal cycle in the spermary of the perch

[21] HUBER GC, 1916, ANAT REC, V11

[22] JARVIS M, 1908, BIOL B, V15

[23] JUNGERSEN HF, 1889, ARBEIT ZOOL ZOOT I W, V9

[24] RETZIUS G, 1905, BIOL UNTERSUCH, V12

[25] RETZIUS G, 1909, BIOL UNTERSUCH, V14

[26] RUBASCHKIN W, 1907, ANAT HEFTE, V41

[27] SWIFT CH, 1914, AM J ANAT, V15

[28] VONBERENBERGGOS, 1912, ARCH MIK ANAT, V81

[29] WHEELER WM, 1899, ZOOL JAHR, V13

[30] WOODS FA, 1902, AM J ANAT, V1

[21] HUBER GC, 1916, ANAT REC, V11

[22] JARVIS M, 1908, BIOL B, V15

[23] JUNGERSEN HF, 1889, ARBEIT ZOOL ZOOT I W, V9

[24] RETZIUS G, 1905, BIOL UNTERSUCH, V12

[25] RETZIUS G, 1909, BIOL UNTERSUCH, V14

[26] RUBASCHKIN W, 1907, ANAT HEFTE, V41

[27] SWIFT CH, 1914, AM J ANAT, V15

[28] VONBERENBERGGOS, 1912, ARCH MIK ANAT, V81

[29] WHEELER WM, 1899, ZOOL JAHR, V13

[30] WOODS FA, 1902, AM J ANAT, V1