Germination of the red spruce

[21] Hartley C, 1918, J AGRIC RES, V15, P0521

[22] Light in relation to the seed germination of Mimulas ringens L. [J]. AMERICAN JOURNAL OF BOTANY, 1932, 19 (07) : 632 - 643

[23] JACOBSEN I, 1926, DANSK SKOVFOR TIDSSK, P724

[24] Germination and vitality of birch seeds [J]. BOTANICAL GAZETTE, 1929, 87 : 127 - 151

[25] KINZEL W, 1932, ANGEWANDTE BOT, V14, P182

[26] KINZEL W, 1908, BER DTSCH BOT GESE A, V26, P631

[27] Kinzel W., 1913, FROST LICHT ALS BEEI

[28] KINZEL W, 1920, ABSCHLUSS ERLAUTERUN, V2

[29] KINZEL WILHELM, 1930, ANGEWANDTE BOT [BERLIN], V12, P16

[30] KORSTIAN CF, 1927, B YALE U, V19

[21] Hartley C, 1918, J AGRIC RES, V15, P0521

[22] Light in relation to the seed germination of Mimulas ringens L. [J]. AMERICAN JOURNAL OF BOTANY, 1932, 19 (07) : 632 - 643

[23] JACOBSEN I, 1926, DANSK SKOVFOR TIDSSK, P724

[24] Germination and vitality of birch seeds [J]. BOTANICAL GAZETTE, 1929, 87 : 127 - 151

[25] KINZEL W, 1932, ANGEWANDTE BOT, V14, P182

[26] KINZEL W, 1908, BER DTSCH BOT GESE A, V26, P631

[27] Kinzel W., 1913, FROST LICHT ALS BEEI

[28] KINZEL W, 1920, ABSCHLUSS ERLAUTERUN, V2

[29] KINZEL WILHELM, 1930, ANGEWANDTE BOT [BERLIN], V12, P16

[30] KORSTIAN CF, 1927, B YALE U, V19