共 7 条
[1]
POCHON J, 1962, TECHNIQUES ANAL MICR
[2]
VISSER SA, 1960, THESIS LONDON
[3]
VISSER SA, 1963, INFORMATIONS TECHNIQ, V3, P3
[6]
WAKSMAN SA, 1930, SOIL SCI, V28, P315
[7]
WRIGHT HE, PALEONTOLOGICAL TECH