The bug book : Harmless insect controls por Helen

Aids to teaching and learning por Coppen, Helen

Studies on bio-ecology of nucleopolyhedrovirus of the teak defoliator and evaluation of formulated products por Helen, S. Mahiba

Paleobiology of Plant Protists por Tappan, Helen

Food for health in Hawaii : notes on choosing food and planning meals, with recipes and menus por Lind, Helen Yonge

Elementary statistical methods por Walker, Helen M.

Statistical inference por Walker, Helen M.

Companion plants and how to use them por Gregg, Richard B.

Outros Autores: “…Philbrick, Helen…”

Tourism environment : regional, economic, cultural and policy issues

Outros Autores: “…Briassoulis, Helen, ed…”

Billy Joe Tatum's Wild foods cookbook and field guide

Outros Autores: “…Witty, Helen ed…”

Genetics and human heredity por Hill, J. Ben

Outros Autores: “…Hill, Helen D.…”

Growing together : agroforestry and ICRAF

Outros Autores: “…Houten, Helen van, ed…”

Annual report 1992

Outros Autores: “…Houten, Helen van, comp…”

Annual report 1996

Outros Autores: “…Van Houten, Helen, ed…”

The Europa directory of international organizations 2001

Outros Autores: “…Canton, Helen, ed…”

Methods in enzymology

Outros Autores:

Methods in enzymology

Outros Autores:

Payments for environmental services, forest conservation and climate change : livelihoods in the REDD ?

Outros Autores: