TY  - BOOK
AU  - Avy, A and Railleres, R
TI  - On a somple method of determining the grain size of particles 1 micron and 0.1 micron
PY  - 1953///
UR  - http://14.139.222.13:80/cgi-bin/koha/opac-detail.pl?biblionumber=1662
ER  -