1. Dermal exposure related to pesticide use :
پدیدآورنده : Richard C. Honeycutt, editor ; Gunter Zweig, editor ; Nancy N. Ragsdale, editor.
کتابخانه: Center and Library of Islamic Studies in European Languages (Qom)
موضوع : Agricultural laborers-- Diseases, Congresses.,Pesticides-- Toxicology, Congresses.,Skin-- Permeability, Congresses.,Agricultural Workers' Diseases-- chemically induced.,Dermatology.,Permeability.,Pesticides-- adverse effects.
رده :
RC965
.
A5
D47
1985
2. Our fragile earth
پدیدآورنده : Helfman, Elizabeth S.
کتابخانه: Central Library and Information Center of Ferdowsi University of Mashhad (Khorasan Razavi)
موضوع : Juvenile literature ، Soil conservation,Juvenile literature ، Agriculture,influence on nature - Juvenile literature ، Man
رده :
S
623
.
H399
3. Rivers and watersheds in America`s future,
پدیدآورنده : by Elizabeth S. Helfman
کتابخانه: Library of Graduate Faculty of Environment of Tehran Univerdity (Tehran)
موضوع : Water resources development,Rivers,Watersheds
رده :
TC
423
.
H45
1965
4. Water for the world
پدیدآورنده : / Elizabeth S. Helfman
کتابخانه: National Library and Archives of Islamic Republic of Iran (Tehran)
موضوع : آبشناسی
رده :
GB
۶۷۱
/
ھ
۸
و
۲ ۱۳۴۲
5. Water for the world
پدیدآورنده : / Illustrated by James MacDonald
کتابخانه: University of Tabriz Library, Documentation and Publication Center (East Azarbaijan)
موضوع : Hydrology
رده :
GB671
.
H4
1963
6. Wheels, scoops, and buckets; how people lift water for their fields
پدیدآورنده : Helfman, Elizabeth S
کتابخانه: Central Library of Sharif University of Technology (Tehran)
موضوع : ، Hydraulic machinery-- Juvenile literature,، Irrigation-- Juvenile literature
رده :
TJ
840
.
H45
