"som, ranjan k. "
a manual of sampling techniques: / ranjan.k. som - 1 ed. - uk : heinemann 1973. - "xv, 284p.; 25 cm."
0 435 53865 9 hard cover
HA31.2 / .S65 1973
a manual of sampling techniques: / ranjan.k. som - 1 ed. - uk : heinemann 1973. - "xv, 284p.; 25 cm."
0 435 53865 9 hard cover
HA31.2 / .S65 1973