"dema, i s. "
nutrition in relation to agricultural production:a manual of: extension supervisers in agriculture.../ i.s. dema - ed. - italy : f.a.o 1965. - "vi, 123p.; 23 cm."
includes bibliography
613. 2 dem
nutrition in relation to agricultural production:a manual of: extension supervisers in agriculture.../ i.s. dema - ed. - italy : f.a.o 1965. - "vi, 123p.; 23 cm."
includes bibliography
613. 2 dem