Water Saving Irrigation 1977 Issue 4 xiang yang da dui cai yong yi dong shi di guan de jing yan

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Water Saving Irrigation
1007-4929
1977 Issue 4

xiang yang da dui cai yong yi dong shi di guan de jing yan

..............page:65-73

yuan jie mian bu jin shi quan she liu pen tou

..............page:37-44

gong guan
ye jian ying ;

..............page:1

pen tou san hua gong zuo jian kuang

..............page:115

jia kuai pen guan jian she de yi ge hao jing yan si chuan sheng zi zhong xian long jie gong she zhu yao yi kao she ban zhuan ye dui da da pen guan jian she da hui zhan de diao cha

..............page:22-25

sj-1 xing kuai su jie tou

..............page:52-55

wu han shi jian ding wu pen 40-2 xing pen guan ji

..............page:116

ning xia jian ding 8y xing pen guan ji zu
lin ;

..............page:116

zhong she cheng yao bi shi pen tou de she ji yuan li
lie bie jie fu ;

..............page:96-115

shui dian bu ke ji si zu zhi pen guan yong su liao guan cai ji fu jian kao he shi yan

..............page:74

guan yu ti gao zhong she cheng pen tou pen guan zhi liang de wen ti
t h nu lin ji nuo fu ;

..............page:92-95

b5os bu jin shi quan she liu pen tou de yan zhi

..............page:45-51

quan guo quan she liu pen tou ji shu gong guan tao lun hui zai bang bu zhao kai

..............page:25

si chuan sheng zhao kai pen guan ji shu jiao jing yan jiao liu hui

..............page:117-118

da xing pen tou cai yong na yi zhong jie gou xing shi hao ?

..............page:74

hua dong zhao kai nong yong quan she liu pen guan ji shu jiao liu hui

..............page:83

gan su sheng zu zhi pen guan ji ju biao yan

..............page:36

he nan sheng zui jin jian ding san zhong pen guan ji

..............page:118-119

liang zhong dian zi tu rang shi du yi

..............page:20

pen guan xi tong gui hua she ji ke ti di yi ci tao lun hui

..............page:55

shui dian bu ke ji si zu zhi pen guan guan dao diao cha

..............page:64

nong zuo wu pen guan tian jian shi yan ke ti zhao kai di yi ci tao lun hui

..............page:44

tu rang ru shen su du yu pen guan shui liang pen guan qiang du deng de guan xi
m la mu ; yu wei ming ;

..............page:84-91

xuan zhuan shi pen tou de shui li can shu ji qi ying xiang yin su

..............page:75-83

jin shu dan ju yao bi shi pen tou ji ben can shu ( cao an )
pen guan ji ju xi lie xing pu qi cao xiao zu ;

..............page:16-21

xin xiang nong tian guan gai yan jiu suo jian cheng pen tou yan shi chang

..............page:95

qing hai sheng zhao kai su liao guan dao zi ya pen guan she bei ji shu jian ding hui

..............page:73

pen tou shi yan fang fa ( cao an )( ben biao zhun shi yong yu pen guan yong pen tou de shi yan )
pen guan ji ju xi lie xing pu qi cao xiao zu ;

..............page:2-15

4cp-y 4cp-g qing xing pen guan ji

..............page:26-36+129

pen guan ji shu 1976 1977 nian zong mu lu

..............page:120-128

shang rao di qu zhao kai pen guan xian chang hui

..............page:51

pen guan qiang du he tu rang ru shen su du de ji ge wen ti

..............page:56-64